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Reproductive biology

The gut epithelium of virgin (top), pregnant (middle), and lactating (bottom) mice, highlighting villus growth.

Pregnancy Permanently Rewires Rodent Guts

Giant Antarctic sea spider (Photo credit: R. Robbins)

Giant Antarctic sea spiders reproductive mystery solved

A smiling primate. Credit Pixabay

Origins and advantages of, er, self love

Researchers from the University of Pennsylvania studied sperm biogenesis in the marmoset, a small monkey species. Providing marmoset inducible pluripotent stem cells with appropriate growth conditions and signals, they were able to coax the cells to begin to resemble primordial germ cells, the precursors of sperm and eggs, that are found in marmoset embryos.

Rewiring blood cells to give rise to precursors of sperm

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