成熟したヒトの精子を、カラー走査電子顕微鏡で撮影したもの。それぞれの精子は全長が約65ミクロンで、大きく頭（赤い部分）、首、尾（青い部分）に分けられる。（MICROGRAPH BY DR TONY BRAIN, SCIENCE PHOTO LIBRARY） 今から5年前、男性の精子の数が激減していると ...

(Paris, France, Monday, 30 June 2025) A new international study presented today at the 41 st Annual Meeting of the European Society of Human Reproduction and Embryology (ESHRE) reveals that IVF cycles ...

フランス・トゥールーズ（Toulouse）の病院（2001年11月5日撮影、資料写真）。(c)AFP/PASCAL PAVANI 【8月21日 AFP】妊娠可能年齢の女性の10-15％が発症し、不妊の原因ともなる子宮内膜症の診断を、外科手術なしに正確にできるとされる検査方法が、このほど医学誌 ...

Off a quiet hallway on the top floor of a building at the University of Osaka in Japan, Katsuhiko Hayashi is hatching a revolution. Human embryo science: can the world’s regulators keep pace? He is on ...

Scientists have detected microplastics — the tiny and pervasive fragments now found in our seas, drinking water, food and, increasingly, living tissue — in human semen and follicular fluid, according ...

A free public lecture will tackle a bold and rapidly emerging question about how scientific advances could one day change how ...

Scientists have identified microplastics in over two-thirds of ovarian follicular fluid and more than half of semen samples, suggesting widespread internal exposure. The findings spotlight a growing ...