Histopathology Grading Lab 2D

A pathologist reading a biopsy slide is doing quantitative geometry: how big is the nucleus relative to the cell, how much do nuclei vary in size and shape, and how many are caught mid-division. This 2D top-down slide simulator lets you pan and zoom a stained tissue field like a microscope stage, dial nuclear atypia up and down, watch the nucleus-to-cytoplasm ratio climb, mitotic figures appear in magenta, and the live Nottingham (Elston–Ellis) grade — the same three-factor score used on real pathology reports, now also plotted as a live sub-score bar chart — update in real time. Switch between the four basic tissue architectures from histology (epithelial, connective, muscle, nervous) to see how each organizes its cells differently.