TGFB1 and neoplasm: A multi‐compartmentalized vascularized tumor‐on‐a‐chip model of ovarian cancer demonstrated the role of CAF‐mediated ECM remodeling and formation of vessel‐like structures with associated hypoxia gradients in the promotion of drug resistance to carboplatin/paclitaxel treatment, henceforth reversed by targeting TGF‐β signaling [77].