Stem cell signaling drives mammary gland development and — maybe — breast cancer
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(University of Pennsylvania) A unique tissue type in many ways, the mammary gland is cloaked in mysteries that scientists puzzle over. In a paper in Science, the University of Pennsylvania’s Rumela Chakrabarti and colleagues describe a newly identified connection between mammary stem cells and macrophages, a type of immune cell. The crosstalk between these two cell types is crucial for mammary gland development, and may also figure into the biology of breast cancer.

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