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11741 Radiology

Which of the following statements is false

AHypoxia in tumours can result from two different mechanisms: chronic hypoxia and acute hypoxia
BAcute hypoxia is caused by a temporary closing of a blood vessel in the tumour
CChronic hypoxia is caused by the limited diffusion distance of oxygen through tissue that is respiring
DOxygen does not affect the radiosensitivity of tumours
Radiology
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