Noninvasive_cell_growth_comedo_tcm8-326778

Comedo: There are areas of "necrosis," which is debris from dead cancer cells; this indicates that a tumor is growing so fast that some tumor cells wither and die because there's not enough blood supply to feed all of them.

A Living cancer cells
B Dying cancer cells
C Cell debris (necrosis)
D Basement membrane (outer layer around the cells)