Update README.md

README.md

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 ## Description
 
-PanNuke is a semi automatically generated nuclei instance segmentation and classification dataset with exhaustive nuclei labels across 19 different tissue types. In total the dataset contains 189,744 labeled nuclei, each with an instance segmentation mask.
+PanNuke is a semi-automatically generated dataset for nuclei instance segmentation and classification, providing comprehensive nuclei annotations across 19 tissue types and 5 distinct cell categories. The dataset includes a total of **189,744 labeled nuclei**, each accompanied by an instance segmentation mask, and contains **7,901 images**, each sized **256×256 pixels**. The images were captured at **x40 magnification** with a resolution of **0.25 µm/pixel**. The dataset is highly imbalanced, with the **"Dead" nuclei category** being particularly underrepresented.
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+Please note that the dataset was created by extracting patches from whole-slide images (WSIs). As a result, some nuclei located at the edges of patches may be cropped, with fewer than 10 visible pixels in certain cases.
 
 ## Dataset Structure