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marin [14]
2 years ago
11

Why do tumor cells need blood vessels to continue to grow

Biology
1 answer:
melomori [17]2 years ago
3 0

Answer:

Like healthy cells, cancer cells cannot live without oxygen and nutrients. So they send out signals, called androgenic factors, that encourage new blood vessels to grow into the tumor. This is called parthenogenesis. Without a blood supply, a tumor can't grow much bigger than a pin head.

Explanation:

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