thymus + ligandome: the mouse side, from deposits that needed no reprocessing

`thymus/SOURCES.md` carried a `## Not here` block saying a mouse thymic reference would
mean reprocessing raw spectra. That turned out to be wrong about two of the deposits.

PXD008733 ships five Trans-Proteomic Pipeline PSM tables (850,396 PSMs, 151 MB) beside its
raw spectra, with DECOY_ entries to recompute the FDR from and the immunoprecipitating
antibody encoded in every run name. So:

thymus/thymus_immunopeptidome_mmu.tsv.gz 4,969 rows / 3,835 peptides
ligandome/tissue_self_mmu.tsv.gz 46,334 rows / 17,256 peptides, 18 tissues

Peptide-level FDR recomputed at 1% (probability_ip >= 0.974142; 35,470 target against 354
decoy peptides). Requiring an sp| protein leaves 32,827 distinct peptides across 19 tissues
against the 28,448 the paper reports, so the cutoff is neither loose nor lossy.

`mhc_a` is as-reported, never predicted: Y3 -> H-2Kb, B22 -> H-2Db, M5/M15 -> I-Ab. The
mapping is checked, not assumed -- on 9-mers it yields H-2Kb P5=F 48%, P9=L 49% and H-2Db
P5=N 77%, P9=L/I/V 48/22/10%, the canonical anchor motifs. Spelling is the pmhc/+ligandome/
form H-2Kb / H-2Db / I-Ab, not the H2-Kb of the contaminated CEDAR rows.

`source_protein` is re-derived by exact lookup against proteome/mouse.fasta.gz rather than
trusted per deposit, because the deposits name proteins three incompatible ways. I and L are
not collapsed: MS cannot tell them apart, so an I/L-collapsed match would assert an
identification the data does not carry.

Two things this does NOT claim. The MHC class II (I-Ab) thymic arm, MSV000087031, ships raw
spectra only and its re-search is still running -- documented in thymus/SOURCES.md, absent
from the table. And PXD031966 stays out entirely: its runs are labelled NOD2_3/NOD4/NOD5,
which names no tissue, and its peptides will not be called thymic on a guess.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

DESCRIPTION.md

@@ -39,12 +39,23 @@ silently admits mouse pMHC. Pre-existing and left unfixed; `neoag_tested_mmu.tsv
 correctly-labelled murine set.
 
 The `thymus/` tables use the reference-peptide schema (`peptide, mhc_a, mhc_class, mhc_species,
-source_protein, species, dataset_origin`; `mhc_a` is null — the HLA Ligand Atlas gives
-donor-level candidate alleles, not a per-peptide deconvolution, and the seqtree self-similarity
-use is peptide-level). Thymus data is **human only**: the mouse thymic immunopeptidome (Schuster
-PXD008733) is deposited as raw MS with the processed peptides on the now-defunct SysteMHC atlas,
-the mouse thymus proteome (PXD007288) is a 12 GB MaxQuant archive, and the mTEC-TRA gene list
-(Sansom GSE53111) is journal-supplement-only — a mouse pass would require reprocessing raw spectra.
+source_protein, species, dataset_origin`). In the human file `mhc_a` is null — the HLA Ligand Atlas
+gives donor-level candidate alleles, not a per-peptide deconvolution, and the seqtree
+self-similarity use is peptide-level.
+
+**Thymus peptides are no longer human-only.** `thymus_immunopeptidome_mmu.tsv.gz` (2026-08-21)
+carries the mouse side, from three deposits: the thymus slice of the Schuster murine MHC-I tissue
+atlas (PXD008733) and sorted cTEC/mTEC (PXD042241), with a third — a re-search of the Nanaware
+I-Ab thymic raw spectra (MSV000087031), the only source of mouse **class II** thymic ligands —
+still running and **not yet in this revision**. PXD008733 turned out **not** to require
+reprocessing after all — it ships
+Trans-Proteomic Pipeline PSM tables alongside the raw spectra, with `DECOY_` entries to recompute
+the FDR from and the immunoprecipitating antibody encoded in the run name, so `mhc_a` is populated
+there (`H-2Kb` / `H-2Db` / `I-Ab`, as-reported, never predicted). Its other 18 tissues are deposited
+separately as `ligandome/tissue_self_mmu.tsv.gz`. `thymus_expression.tsv.gz` is still human-only:
+the mouse thymus proteome (PXD007288) is a 12 GB MaxQuant archive and the mTEC-TRA gene list
+(Sansom GSE53111) is journal-supplement-only. See `thymus/SOURCES.md` for the per-deposit FDR
+regimes, which differ and are not interchangeable.
 
 ## Public datasets (this repo)
 
@@ -85,10 +96,12 @@ Every tracked directory now carries one:
 | `proteome/mouse.fasta.gz` | Mouse proteome (UP000000589) | C57BL/6 self-reference proteome |
 | `proteome/*_UP*.fasta.gz` | 16 bacterial + viral reference proteomes | foreign-antigen references for molecular-mimicry scans and peptide-flank extraction; see `proteome/README.md` |
 | `thymus/thymus_immunopeptidome.tsv.gz` | Thymus self-peptidome (human) | HLA Ligand Atlas thymus-eluted self peptides (25.9k MHC-I + 28.0k MHC-II) — central-tolerance "self" reference for seqtree; fills the mislabeled source #1 |
+| `thymus/thymus_immunopeptidome_mmu.tsv.gz` | Thymus self-peptidome (mouse) | 4,969 rows / 3,835 distinct peptides, `mhc_species=MusMusculus`. Whole thymus H-2Kb (1,089) + H-2Db (1,574) from the Schuster atlas PSM tables at a recomputed 1% peptide FDR, plus 2,304 peptides from sorted cTEC/mTEC (PXD042241, PEAKS −10lgP ≥ 20). `mhc_a` is as-reported from the IP antibody, never predicted. The MHC-II (I-Ab) arm is pending — see `thymus/SOURCES.md` |
 | `thymus/thymus_expression.tsv.gz` | Thymus expression (human) | thymically expressed self: HPA thymus-cluster genes (126) + atlas thymus source proteins (10.4k) |
 | `ligandome/viral_foreign_iedb.tsv.gz` | Viral ligandome (IEDB) | viral-source presented peptides (foreign reference) |
 | `ligandome/viral_orfs_gse272406.tsv.gz` | Pan-viral ORFs (GSE272406) | translated novel viral ORF proteins (foreign; *not* thymus self — spec mislabel) |
 | `ligandome/cancer_targets_tsarina.tsv.gz` | Cancer-testis antigens | curated shared tumor-antigen genes (tsarina) |
+| `ligandome/tissue_self_mmu.tsv.gz` | Tissue self-ligandome (mouse) | 46,334 rows / 17,256 distinct peptides across **18 non-thymic tissues**, Schuster murine MHC-I atlas (PXD008733) at a recomputed 1% peptide FDR. H-2Kb 8,829 + H-2Db 7,781 peptides (MHC-I) and 4,348 I-Ab (MHC-II); carries a `tissue` column. Tumour cell lines (EL4, B16F10, GL261, LLC) excluded — they are not normal tissue |
 | `summary.tsv` | Pipeline stats | row counts & extraction metrics |
 
 ## Private (gitignored — NOT in this repo)

ligandome/SOURCES.md

@@ -1,8 +1,8 @@
 # `ligandome/` — sources, provenance and citations
 
-Three reference sets used as *background* rather than as labelled training data: what a foreign
-peptide looks like, what a novel viral ORF looks like, and which self genes are tumour-restricted
-enough to be targeted safely.
+Four reference sets used as *background* rather than as labelled training data: what a foreign
+peptide looks like, what a novel viral ORF looks like, which self genes are tumour-restricted
+enough to be targeted safely, and what a mouse presents outside the thymus.
 
 Every citation below was resolved against **PubMed** and carries its PMID and DOI. Where a source
 could not be resolved, that is stated as unresolved rather than filled in with a plausible guess.
@@ -145,6 +145,66 @@ not a verification).
 
 ---
 
+## `tissue_self_mmu.tsv.gz`
+
+Mouse **self** peptides eluted from 18 normal tissues — the non-thymic counterpart to
+`thymus/thymus_immunopeptidome_mmu.tsv.gz`, and the first mouse self-ligandome in this compendium.
+
+| | |
+|---|---|
+| rows | **46,334** (17,256 distinct peptides) |
+| columns | `peptide`, `mhc_a`, `mhc_class`, `mhc_species`, `source_protein`, `species`, `tissue`, `dataset_origin` |
+| class | MHC-I 13,139 distinct · MHC-II 4,348 distinct |
+| host | MusMusculus, 100% (C57BL/6) |
+| alleles | `H-2Kb`, `H-2Db` (MHC-I) · `I-Ab` (MHC-II) |
+| tissues | 18 |
+| provenance | **experimental** — MS-eluted ligands; identifications and the FDR cutoff **derived** |
+
+**Origin.** PRIDE [PXD008733](https://www.ebi.ac.uk/pride/archive/projects/PXD008733), the deposit's
+own Trans-Proteomic Pipeline PSM tables (`raw_first_batch.csv`, `raw_second_batch.csv`,
+`raw_third_batch.csv`, `raw_orbi.csv`, `raw_lumos.csv` — 850,396 PSMs, 151 MB), not its raw spectra.
+
+> Schuster H, Shao W, Weiss T, Pedrioli PGA, Roth P, Weller M, Campbell DS, Deutsch EW, Moritz RL,
+> Planz O, Rammensee HG, Aebersold R, Caron E.
+> **A tissue-based draft map of the murine MHC class I immunopeptidome.**
+> *Sci Data* 2018;5:180157.
+> PMID [30084848](https://pubmed.ncbi.nlm.nih.gov/30084848/) ·
+> doi:[10.1038/sdata.2018.157](https://doi.org/10.1038/sdata.2018.157)
+
+**The FDR is recomputed here, not inherited.** The PSM tables carry `DECOY_`-prefixed entries, so
+distinct peptides were ranked by best `probability_ip` (iProphet) and the largest set with
+decoy/target ≤ 0.01 kept: **`probability_ip` ≥ 0.974142 → 35,470 target peptides against 354 decoy
+peptides, 0.0100 estimated peptide-level FDR**. Requiring an `sp|` protein then drops the `iRT`
+spike-ins, `CONT_*` and `LMP_*` entries, leaving 32,827 distinct peptides across all 19 tissues —
+against the 28,448 the paper reports, so the cutoff is neither loose nor lossy.
+
+**`mhc_a` is the immunoprecipitating antibody, as reported — not a prediction.** The `spectrum`
+field names the run and the run name names the antibody: **Y3 → H-2Kb**, **B22 → H-2Db**,
+**M5 / M15 / M15classII → I-Ab** (C57BL/6 is I-Ab only; *Ea* is deleted in the b haplotype). The
+mapping is checked rather than assumed — on 9-mers it yields H-2Kb P5 = F 48%, P9 = L 49% and
+H-2Db P5 = N 77%, P9 = L/I/V 48/22/10%, the canonical Kb and Db anchor motifs.
+
+**Why it matters here.** `mimicry`'s `self` channel is a *proteome* — being encoded is not being
+presented. This is the first mouse set that says which self peptides are actually presented, and by
+which allele, in tissue a T cell can reach. Paired with the thymic deposit it separates two
+different tolerance arguments: met during negative selection (thymus) versus reachable in the
+periphery (here).
+
+**Caveats.**
+- Cell lines in the source atlas (EL4, B16F10, GL261, LLC/LLC1/LLC2) are **excluded** — tumour
+  lines, not normal tissue.
+- Coverage is very uneven, and it is sampling depth, not biology: small_intestine carries 5,635
+  MHC-I peptides and spinal_cord 239. Do not read a tissue's peptide count as presentation breadth.
+- MHC-II coverage is incidental — only a few runs used an anti-I-A/I-E antibody, so 15 of 18 tissues
+  have under 200 MHC-II peptides and five have fewer than 10.
+- `source_protein` is **re-derived** by exact lookup against `proteome/mouse.fasta.gz`, not taken
+  from the deposit. I and L are not collapsed: MS cannot distinguish them, so an I/L-collapsed match
+  would assert an identification the data does not carry. 3 rows map to no mouse protein.
+- 28,833 rows were dropped by the length filter (MHC-I 8–11, MHC-II 11–25, matching
+  `mhcmatch.mimics._LEN`) because every consumer drops them silently anyway.
+
+---
+
 ## Re-fetch / regenerate
 
 None of these three are regenerated by this repository — they are deposited as fetched.
@@ -155,6 +215,10 @@ None of these three are regenerated by this repository — they are deposited as
     #   https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE272406
     # cancer_targets_tsarina:
     #   pip install tsarina  # https://github.com/pirl-unc/tsarina  (CTA table export)
+    # tissue_self_mmu: regenerated, unlike the three above.
+    #   cd ~/vcs/projects/2026-mouse-thymus
+    #   aria2c -i src/urls_results.txt -d ~/hf/pmhc_data/raw/thymus_mouse -x4 -j3 --continue
+    #   ./src/ingest_pxd008733.py && ./src/build_tissue_mmu.py
 
 ## Audit note on `DESCRIPTION.md`
 

ligandome/tissue_self_mmu.tsv.gz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7559895435b9f0f8c37e56137b13be88e4a1a8edc10c879fb780861ad3b32076
+size 691877

thymus/SOURCES.md

@@ -1,8 +1,12 @@
 # `thymus/` — sources
 
 The central-tolerance reference: what a developing T-cell repertoire was negatively selected
-against. Both files are **experimental** (mass spectrometry / antibody-based expression); the
-harmonisation into this schema is computed.
+against. All three files are **experimental** (mass spectrometry / antibody-based expression); the
+harmonisation into this schema, and every FDR cutoff, is computed.
+
+Human and mouse are separate files rather than one two-species table, matching the `_mmu` / `_hsa`
+convention in `neoantigens/`. Every consumer already filters on `mhc_species`, and the human deposit
+is an LFS object all of them read.
 
 ## `thymus_immunopeptidome.tsv.gz` — 53,878 rows
 
@@ -14,7 +18,8 @@ Thymus-eluted self peptides, **HLA Ligand Atlas** (`dataset_origin = hla_ligand_
 | MHCI | 25,891 |
 
 Schema: `peptide`, `mhc_a`, `mhc_class`, `mhc_species`, `source_protein`, `species`,
-`dataset_origin`. Human only.
+`dataset_origin`. Human only. `mhc_a` is empty throughout — the atlas gives donor-level candidate
+alleles, not a per-peptide deconvolution.
 
 **A hit here is a tolerance argument and an autoimmunity flag, and those are the same fact read two
 ways**: a neoantigen resembling a thymically presented peptide had its reactive clones plausibly
@@ -22,6 +27,92 @@ deleted (lower expected immunogenicity), and a vaccine built on it risks cross-r
 `mhcmatch.mimics` keeps it as its own category for exactly that reason and never sums it with the
 foreign ones — see `mhcmatch.mimics.KINDS`.
 
+## `thymus_immunopeptidome_mmu.tsv.gz` — the mouse counterpart
+
+Same schema, column for column. `mhc_species = species = MusMusculus` throughout. Added 2026-08-21;
+this file is what the `## Not here` block of this document used to say was impossible.
+
+**4,969 rows / 3,835 distinct peptides** as deposited here.
+
+| `dataset_origin` | `mhc_class` | `mhc_a` | rows | peptides |
+|---|---|---|--:|--:|
+| `pride_pxd008733_thymus` | MHCI | `H-2Db` | 1,574 | 1,574 |
+| `pride_pxd008733_thymus` | MHCI | `H-2Kb` | 1,089 | 1,089 |
+| `pride_pxd008733_thymus` | MHCII | `I-Ab` | 2 | 2 |
+| `pride_pxd042241_tec` | MHCI | *(empty)* | 2,304 | 2,304 |
+
+MHC-I lengths run 8–11 with a median of 9. The two MHC-II rows are all that survive the 11–25 window
+from PXD008733's 16 thymic anti-I-A/I-E PSMs — that immunoprecipitation returned mostly 9–10mers,
+which is the class-I-length contamination the Nanaware paper is about. 121 rows carry an empty
+`source_protein`; they are PXD042241 peptides from non-canonical ORFs that are not in UP000000589.
+
+Unlike the human file, `mhc_a` is populated where the deposit records an immunoprecipitating
+antibody, in the `pmhc/`+`ligandome/` spelling `H-2Kb` / `H-2Db` / `I-Ab` — **not** the `H2-Kb` form
+found in the contaminated CEDAR rows of `neoantigens/neoag_tested.tsv.gz`. It is as-reported
+attribution; nothing is predicted, and it is empty where the immunoprecipitation was pan-H-2.
+
+### `pride_pxd008733_thymus` — whole thymus, H-2Kb and H-2Db
+
+The thymus slice of the murine MHC-I tissue atlas; the other 18 tissues are in
+`ligandome/tissue_self_mmu.tsv.gz`, which carries the full provenance and the FDR derivation.
+
+> Schuster H, Shao W, Weiss T, Pedrioli PGA, Roth P, Weller M, Campbell DS, Deutsch EW, Moritz RL,
+> Planz O, Rammensee HG, Aebersold R, Caron E.
+> **A tissue-based draft map of the murine MHC class I immunopeptidome.**
+> *Sci Data* 2018;5:180157.
+> PMID [30084848](https://pubmed.ncbi.nlm.nih.gov/30084848/) ·
+> doi:[10.1038/sdata.2018.157](https://doi.org/10.1038/sdata.2018.157)
+
+Taken from the deposit's own Trans-Proteomic Pipeline PSM tables, not its raw spectra. Peptide-level
+FDR recomputed from the deposit's `DECOY_` entries at 1%: `probability_ip` ≥ 0.974142, 35,470 target
+against 354 decoy peptides.
+
+### `pride_pxd042241_tec` — sorted cortical and medullary thymic epithelial cells
+
+The cells that actually induce central tolerance, which whole thymus dilutes.
+
+> Larouche JD, Laumont CM, Trofimov A, Vincent K, Hesnard L, Brochu S, Côté C, Humeau JF,
+> Bonneil É, Lanoix J, Durette C, Gendron P, Laverdure JP, Richie ER, Lemieux S, Thibault P,
+> Perreault C.
+> **Transposable elements regulate thymus development and function.**
+> *eLife* 2024;12:e91037.
+> PMID [38635416](https://pubmed.ncbi.nlm.nih.gov/38635416/) ·
+> doi:[10.7554/eLife.91037](https://doi.org/10.7554/eLife.91037)
+
+`mhc_a` is empty: the deposit does not name the immunoprecipitating antibody.
+
+**Its FDR is not recomputable, and the cutoff is a stated convention.** The mzid declares
+`no threshold` at protocol level and carries no decoy entries, and its `passThreshold` attribute is
+not a quality filter — it passes PSMs down to −10lgP = 5.00 while rejecting others up to 35.62.
+The retained set is rank-1 PSMs at **PEAKS −10lgP ≥ 20**. That cutoff is doing real work: 8–11mers
+rise from 67.2% to 82.0% of distinct peptides and 9-mers from 28.0% to 38.1%. It is **not** a
+measured 1% FDR and must not be described as one.
+
+Source proteins in this deposit are Ensembl and transposable-element identifiers from a personalized
+mTEC/cTEC database, so peptides derived from non-canonical ORFs carry an empty `source_protein`
+after re-mapping.
+
+### `massive_msv000087031_thymus` — I-Ab, the MHC class II arm — **pending, not in this revision**
+
+The only source of mouse **class II** thymic ligands. No identifications were deposited, so this arm
+is a re-search of the raw spectra with nf-core/mhcquant 3.2.0, which is still running on aldan3 at
+the time of this commit. **No `massive_msv000087031_thymus` rows are present in the file yet** — the
+two `dataset_origin` values it currently carries are `pride_pxd008733_thymus` and
+`pride_pxd042241_tec`. This section documents the arm so the provenance is written down once; the
+counts land with it.
+
+> Nanaware PP, Jurewicz MM, Clement CC, Lu L, Santambrogio L, Stern LJ.
+> **Distinguishing Signal From Noise in Immunopeptidome Studies of Limiting-Abundance Biological
+> Samples: Peptides Presented by I-A^b in C57BL/6 Mouse Thymus.**
+> *Front Immunol* 2021;12:658601.
+> PMID [33995376](https://pubmed.ncbi.nlm.nih.gov/33995376/) ·
+> doi:[10.3389/fimmu.2021.658601](https://doi.org/10.3389/fimmu.2021.658601)
+
+Twelve of the deposit's 37 runs — the four thymus samples (`120116WTII`, `020617WT_MHCII`,
+`061417MHCII_WT1`, `061417MHCII_WT2`) in three technical replicates each. The splenic B-cell and
+dendritic-cell arms and the human LCL runs are deliberately **not** included: this is a thymic
+reference, and pooling peripheral APCs into it would destroy the distinction the file exists to make.
+
 ## `thymus_expression.tsv.gz` — 10,493 rows
 
 Thymically expressed self, by gene. Schema: `gene`, `species`, `evidence`, `value`.
@@ -33,11 +124,45 @@ Thymically expressed self, by gene. Schema: `gene`, `species`, `evidence`, `valu
 
 The two lines of evidence are kept in a column rather than pooled: one is "a peptide from this
 protein was eluted from thymus", the other is "this gene is thymus-enriched by expression". They
-support each other; they are not interchangeable.
+support each other; they are not interchangeable. Human only — there is no mouse counterpart yet.
+
+## Caveats on the mouse file
+
+- **It is not the human file's equal in size, and cannot be.** The human deposit is one large
+  multi-donor atlas; the mouse side is assembled from three smaller studies with different
+  antibodies, instruments and search pipelines. Read the `dataset_origin` column before pooling.
+- **Three different FDR regimes are present**, one per `dataset_origin` — a recomputed 1%
+  peptide-level FDR (PXD008733), a stated PEAKS score convention (PXD042241), and mhcquant's 1%
+  peptide-level FDR (MSV000087031). They are not interchangeable; the column is the handle.
+- `source_protein` is **re-derived** by exact lookup against `proteome/mouse.fasta.gz`, not taken
+  from the deposits, because the three name their proteins in three incompatible ways. I and L are
+  not collapsed — MS cannot distinguish them, so an I/L-collapsed match would assert an
+  identification the data does not carry.
+- Lengths are clipped to `mhcmatch.mimics._LEN` (MHC-I 8–11, MHC-II 11–25) because every consumer
+  drops the rest silently.
 
 ## Not here
 
-**No mouse thymus reference.** The candidate deposits do not survive contact: the mouse thymus
-proteome (PXD007288) is a 12 GB MaxQuant archive and the mTEC-TRA gene list (Sansom, GSE53111) is
-journal-supplement-only, so a mouse pass means reprocessing raw spectra. Recorded in
-`DESCRIPTION.md` and open in the benchmark repo's TODO — **absent, not overlooked**.
+**No mouse thymus *expression* table.** The mTEC-TRA gene list (Sansom, GSE53111) is
+journal-supplement-only, and the mouse thymus proteome (PXD007288) is a 12 GB MaxQuant archive.
+`thymus_expression.tsv.gz` stays human-only until one of those is processed — **absent, not
+overlooked**.
+
+**PXD031966 is not here, and that is a labelling problem rather than a data problem.** The NOD-mouse
+MHC-I deposit covers thymus *and* pancreas, but its experiment labels (`ICR1`, `ICR6`, `NOD2_3`,
+`NOD4`, `NOD5`) name neither, PMID 36210013 is closed-access with no PMC copy, and its deposited
+tables give 30–50 peptides per run — too few for the pancreatic acinar signature
+(Cela/Prss/Cpa/Ctrb/Pnlip) to separate the two. Its peptides will not be labelled `thymus` on a
+guess. See `~/vcs/projects/2026-mouse-thymus/SOURCES.md`.
+
+## Re-fetch / regenerate
+
+    cd ~/vcs/projects/2026-mouse-thymus
+    # results-only deposits (671 MB); verify every file against PRIDE's SHA-1 `checksum` field
+    aria2c -i src/urls_results.txt -d ~/hf/pmhc_data/raw/thymus_mouse -x4 -j3 --continue
+    ./src/ingest_pxd008733.py
+    ./src/ingest_pxd042241.py
+    # MSV000087031 raw spectra + re-search, on aldan3
+    aldan3 slurm submit src/fetch_raw.sbatch -- <srcdir> <destdir>
+    aldan3 slurm submit src/mhcquant.sbatch -- mhc2 /projects/hla_epitope/mouse_thymus
+    ./src/build_thymus_mmu.py

thymus/thymus_immunopeptidome_mmu.tsv.gz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:29fcc416692d12f9d7836f09cdacf17ede3e1c9323bc04149cae524f944bca97
+size 77778