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 "samples": 12163,
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 "flags": {
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  "feature_species_differs": 47,
  "normal_but_disease_text": 17
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  "age rule: bare number read as years": 1351,
  "age rule: postnatal day": 404,
  "rule: culture or organoid (culture time is not a life stage)": 239,
  "age rule: embryonic day": 154,
  "age rule: age in years": 113,
  "age rule: post-conception / gestational weeks": 64,
  "age rule: days in an age series": 28,
  "age rule: Carnegie stage": 4,
  "age rule: age range midpoint": 4
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 "organ": {
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  "colon": 1000,
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  "kidney": 590,
  "skin": 489,
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  "unknown": 185,
  "blood vessel": 162,
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  "lymph node": 160,
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  "skeletal muscle": 138,
  "head and neck": 122,
  "plant": 120,
  "uterus": 117,
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  "eye": 89,
  "bone marrow": 89,
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  "oral cavity": 60,
  "bladder": 55,
  "adrenal gland": 39,
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 },
 "sample_kind": {
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  "tumour tissue": 2754,
  "metastasis": 352,
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  "xenograft": 185,
  "whole embryo/organism": 57,
  "cell culture": 17,
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 },
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  "perturbation": 1125,
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 },
 "life_stage": {
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  "neonatal or infant": 324,
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 },
 "sex": {
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 },
 "preservation": {
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  "FFPE": 2839,
  "fresh frozen": 2327,
  "fixed frozen": 40
 },
 "with_tissue_term": 11605,
 "with_disease_term": 6479,
 "with_pubmed": 8479,
 "with_donor_key": 3391
}