Pregnancy Recruits Killer T Cells that Can Protect the Breasts Against Cancer for Years.

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An Australian study conducted by researchers from Peter Mac showed that the natural protection against breast cancer provided by pregnancy is due to the influx of killer T cells into the breast. The research published in the scientific journal Nature Immunology reveals that these cells begin to populate the breast during pregnancy and are closely linked to changes in breast epithelial cells. The study brings the hope that, one day, this natural …