Q49: Leukemia originates in stem cells.
Q50: Benign tumors
A)spread uncontrollably.
B)are malignant.
C)are usually fatal.
D)None of
Q51: A tumor is a
A)neoplasm.
B)growth.
C)made of cells that
Q52: Tumors that are not malignant are invasive.
Q53: Patients with AIDS are at high risk
Q55: Tissue that is underdeveloped is called hypoplastic.
Q56: Cancer that is found in many family
Q57: The DNA fragment that converts normal cells
Q58: A necrotic tumor contains
A)polyps.
B)open wounds.
C)dead tissue.
D)scirrhous tissue.
Q59: A cancer cluster usually results from environmental
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