Researchers have determined that the growth of hormone-responsive breast cancer cells depends upon ____
a. the relative concentrations of ER? and ER? in the tumor cells
b. the ability of ER? to stimulate cancer cell growth
c. the ability of ER? to inhibit cancer cell growth
d. whether DNA binding sites exists for ER?, but not ER?
e. the relative concentrations of estrogen and testosterone in breast tissue
ANSWER: a
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Destruction of the motor areas in the left cerebral
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