Featured series 
Tag: Sperm
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Health
New view of germ cells
Cassandra Extavour is the author of a new study that points to a different mechanism as an ancestral process for specifying germ cells.
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Health
Pesticides result in lower sperm counts
Men who ate fruits and vegetables with higher levels of pesticide residues had lower sperm counts and lower percentages of normal sperm than those who ate produce with lower residue levels, according to a new study from Harvard T.H. Chan School of Public Health.
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Health
When cooperation counts
A new study conducted by Harvard scientists shows that in deer mice, a species known to be highly promiscuous, sperm clump together to swim in a more linear fashion, increasing their chances of fertilization.
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Health
Malaria in 3-D
Using an imaging technique known as high-speed holographic microscopy, Laurence Wilson, a fellow at Harvard’s Rowland Institute, worked with colleagues to produce detailed 3-D images of malaria sperm — the cells that reproduce inside infected mosquitoes — that shed new light on how the cells move.
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Campus & Community
Sperm Of A Feather Flock Together
Males compete for females’ attention. It’s a pattern seen throughout the animal kingdom. But new research shows that kind of male-male competition persists even after animals have mated.
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Health
Sperm competition, cooperation
Some mouse sperm can discriminate between their brethren and the competing sperm from other males, showing an unusual behavioral complexity.
