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Tag: "contraceptives" at biology news

How sperm crack the whip

...gnize new forms of male infertility and design new contraceptives to thwart sperm entry into the egg. What's more, they said, the exquisitely delicate analytical technique they used to eavesdrop on the electrical currents inside the squirming sperm cell could literally open a new window into its largely mysterious...

Hormonal male contraception reversible after few months for all men

...the previously described efficacy of hormonal male contraceptives is coupled with highly predictable recovery to semen characteristics that are compatible with fertility. These findings thereby increase the promise of new contraceptive drugs allowing men to share more fairly the satisfaction and burden of family pl...

Sperm stem cells closer to being like embryonic stem cells

... embryonic stem cells, the development of new male contraceptives and new animal models to test stem cell-based therapies. Germ-line cells are those such as egg and sperm and their precursors whose genetic material can be passed to offspring. "The ability to manipulate male germ-line stem cells and get them to gro...

Bone Density Recovers After Teens Stop Injected Contraceptive

...contraception, including oral contraceptives. Oral contraceptives also contain hormones. Some contain a combination ...n said. “Depo-Provera is one of the most effective contraceptives ?its side effects need to be weighed against the potential consequences of an unintended pregnancy t...

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