Role of hormones in the growth and regression of human breast cancer cells (MCF-7) transplanted into athymic nude mice.


The hormonal environments require by human breast cancer cells MCF-7 to produce solid tumors in nude mice are described. A 100% take was obtained within 7 days following inoculation of 2X10(6) actively growing (log phase) MCF-7 cells into the mammary fat pads of intact, athymic BALB/c nude mice. Tumors failed to develop, even with an inoculum of 20X10(6… (More)


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