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+# ATLAS-1: 3D Drug-Treated Cancer Cells
+
+**ATLAS-1** is a research dataset of single-cell **3D morphologies** captured under different drug treatments.  
+It contains **1,500** WM266-4 human melanoma cells embedded in **collagen** and imaged using **oblique-plane light-sheet microscopy**. Each cell is released as a **1024-point point cloud** sampled from a reconstructed **surface mesh**.
+
+- **Total cells:** 1,500  
+- **Classes / conditions:**  
+  - `nocodazole` (500) — microtubule inhibitor; rounded morphology  
+  - `blebbistatin` (500) — myosin II inhibitor; elongated/spindle morphology  
+  - `control` (500) — untreated baseline variability  
+- **Representations:** point clouds (1024 pts/cell) and watertight meshes  
+- **Intended use:** benchmarking point-cloud models on real biological shapes; studying drug-induced 3D morphology
+
+> This dataset accompanies the **PointMIL** project (inherently interpretable point-cloud classification via MIL).
+
+---
+
+## Dataset Summary
+
+Cells were segmented, meshed with **marching cubes** (+ Laplacian smoothing), then **uniformly sampled** to 1024 points per cell from the surface mesh. Files are organized by condition with a metadata CSV that holds labels and basic experiment info.
+
+**Why ATLAS-1?**
+- Real, noisy, heterogeneous 3D cell shapes (not synthetic CAD)
+- Clear treatment effects (rounded vs elongated) for interpretable benchmarks
+- Comes with both **mesh** and **point-cloud** views for flexible pipelines
+
+---
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+## Repository Layout