Metastasis refers to
A) the measured growth rate of benign tumors.
B) the spread of malignancy across body parts.
C) one specific variety of breast cancer.
D) a particularly deadly form of lung cancer.
Question 2
The main difference between benign and malignant tumors is
A) that malignant cells can invade surrounding tissues.
B) the ability of benign tumors to metastasize.
C) the size of the tumor each produces.
D) that benign tumors attack nearly any tissue, whereas malignancies are specific to animal (including human) tissue cells.
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