Tag: Sperm

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • Health

    Sperm competition, cooperation

    Some mouse sperm can discriminate between their brethren and the competing sperm from other males, showing an unusual behavioral complexity.