The brain’s phagocytes follow an ATP bread trail laid down by calcium waves to the site of damage.
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Researchers create early stage sperm cells from induced pluripotent stem cells, raising hopes that infertile men could be fathers.
Researchers identify a nerve growth factor in semen that stimulates ovulation in certain mammals, and which could shed light on human infertility.
A small molecule that inhibits a protein important for chromatin organization can cause reversible sterility in male mice.
Japanese astronauts deliver an aquarium to the International Space Station to study the effects of microgravity on marine life.
The first genetic comparison of one man’s individual sperm cells uncovers unique genetic shuffling representative of a much bigger population.
Actin filaments respond to pressure by forming branches at their curviest spots, helping resist the push.
Germline stem cells discovered in human ovaries can be cultured into fresh eggs.
Human-specific duplications of a gene involved in brain development may have contributed to our species’ unique intelligence.
Human embryonic stem cells swiftly kill themselves in response to DNA damage.
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