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Biological models are experimental systems that recreate aspects of human tissue function or disease. For example, certain tumour cell lines may serve as cancer models, and transgenic mice that express human beta-amyloid protein may serve as animal models of Alzheimer’s disease.
In this Tools of the Trade article, Lei Yuan (from the Cai lab) highlights a new culture system that allows in vitro reconstitution of a dynamic miniature mammary gland.