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Cancer cells travel together to forge ‘successful’ metastases

There’s apparently safety in numbers, even for cancer cells. New research in mice suggests that cancer cells rarely form metastatic tumors on their own, preferring to travel in groups since collaboration seems to increase their collective chances of survival, according to researchers at Johns Hopkins.

A Breast Cancer Metastasis in the Lungs
A metastasis now growing in lung tissue (blue) that originated from at least two cells (red and green) from a multicolored tumor in the mammary gland of a mouse.
Credit: Courtesy of Breanna Moore, Cheung laboratory, Fred Hutchinson Cancer Research Center