Malignant tumors often proliferate rapidly and have an atypical appearance because of their rapid multiplication. The pro-cess of becoming more and more atypical is often called:
A. hyperplasia
B. invasion
C. differentiation
D. angiogenesis
c
Rationale: Malignant tumors often proliferate more rapidly than benign tumors, and they have an atypical appearance. This is because cancer cells, unlike normal cells, do not continue maturing. Instead, their rapid multiplication causes them to be-come more and more atypical—a process often called differentiation.
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