Other

3 Canadian families sue US sperm bank over sperm donor

Three Ontario families are suing a U.S.-based sperm bank and its Canadian distributor, alleging they were misled about a donor's medical and social history, which included a criminal record and significant mental illness.

Medical research

Milestone reached on path to new form of male contraception

Researchers studying strategies to develop a non-hormonal approach to male contraception have reached an important milestone in their work, discovering a way to produce a key enzyme found only in sperm in sufficient quantities ...

Medical research

Some sunscreen ingredients may disrupt sperm cell function

Many ultraviolet (UV)-filtering chemicals commonly used in sunscreens interfere with the function of human sperm cells, and some mimic the effect of the female hormone progesterone, a new study finds. Results of the Danish ...

Other

How can twins have different fathers?

The recent report from northern Hòa Bình province in Vietnam of twins born to two different fathers has been making headlines around the world. The father of the twins took the infants for DNA tests where it was revealed ...

Medical research

Mammalian fertilization, caught on tape

The development of every animal in the history of the world began with a simple step: the fusion of a spermatozoon (the male gamete) with an oocyte, or egg (the female gamete). Despite the ubiquity of this process, the actual ...

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