a tumor is initiated when: Select one: a. it has grown large enough to detect on an X-ray b. its cells attract blood vessels to

Question

a tumor is initiated when:
Select one:
a. it has grown large enough to detect on an X-ray
b. its cells attract blood vessels to feed it.
c. its cells begin to grow more rapidly than normal in the GO phase
d. cells are exposed to something that causes genetic change in a proto-oncogene

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