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I am planning to utilize a new system in our lab, in which I will co-culture cancer cells from different tissues with fibroblasts. I have the option to receive skin-derived primary fibroblasts. I have been told the normal fibroblasts are very similar all over the body. Is this really true? I assume that fibroblasts secrete factors, for example, that are tissue specific. The question is, how quickly do they adapt to a new environment? For example if I take these skin-derived fibroblasts and co-culture them with breast cancer cells, how long will it take the fibroblasts, if any, to become more like fibroblasts derived from the breast?

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