AirwayNorm: Normative Scoring Module for Rat Inhalation Histopathology

A digital-pathology add-on that scores rat airway sections from inhalation studies against a published level-by-level normative baseline — epithelial thickness, ~230 cells per 10 high-power fields, <1% goblet cells, 40–50% non-ciliated cells — flagging toxicant injury objectively.