Medical research

Manufacturing spermatogonia stem cells

For species that rely on sexual reproduction, including mice and men, offspring can only happen if sperm from the male fertilize eggs from the female. Even artificial fertilization techniques depend on donors for both of ...

Genetics

Gene involved in male infertility discovered

A gene that controls the completion of meiosis in spermatogenesis has been discovered by researchers from Kumamoto University. Until now, details of the mechanism that inactivates the expression of genes involved in the meiotic ...

Obstetrics & gynaecology

Does delaying fatherhood reduce fertility?

In a study published in Acta Obstetricia et Gynecologica Scandinavica, couples in which the prospective father was older had a reduced likelihood of a successful birth through in vitro fertilization/intracytoplasmic sperm ...

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