produce and transport semen, which contains sperm release sperm into the female reproductive tract during sex make male sex hormones, such as testosterone Have you ever wondered what the different ...

New research has mapped the cell types that specialize to form reproductive organs in both sexes, identifying key genes and ...

It’s not just about chromosomes. Or reproductive cells. Or any other binary metric. Many genetic, environmental and developmental variations can produce what are thought of as masculine and feminine ...

A new single-cell map reveals how human reproductive organs form and respond to environmental influences A developing human ...

Every few years, a new study appears sounding an alarm about dropping sperm counts, cuing sensational headlines about the end of men and scholarly concerns about the robustness of the data. Yet amid ...

Researchers have recently identified and described a new genus and species of xanthid crab found in Okinawa Island, Ryukyu Islands, Japan. Named Mabui calculus, it is the first among the 7,800 species ...