Human Testicles Contain Endocannabinoid System Components
Proteins that synthesize, bind, and degrade endocannabinoids are present in the body’s sperm factories, suggesting that the use of cannabis may directly affect them.
Human Testicles Contain Endocannabinoid System Components
Human Testicles Contain Endocannabinoid System Components

Proteins that synthesize, bind, and degrade endocannabinoids are present in the body’s sperm factories, suggesting that the use of cannabis may directly affect them.

Proteins that synthesize, bind, and degrade endocannabinoids are present in the body’s sperm factories, suggesting that the use of cannabis may directly affect them.

reproductive biology
Researchers Develop New Method for Sexing Sperm
Researchers Develop New Method for Sexing Sperm
Katarina Zimmer | Aug 13, 2019
Scientists found they could sort mouse sperm prior to IVF by treating semen with a drug that selectively slows down X-bearing cells.
Fruit Flies Hide Their Eggs in Plain View
Fruit Flies Hide Their Eggs in Plain View
Karl Gruber | Jun 1, 2019
Chemical cues help Drosophila mask their eggs from predators.
Doctors Report World’s Second Case of “Semi-Identical” Twins
Doctors Report World’s Second Case of “Semi-Identical” Twins
Catherine Offord | Feb 28, 2019
The extremely rare event, thought to be caused by two sperm cells fertilizing the same egg simultaneously, was last reported in 2007.
Spotted Seatrout Continued to Spawn During and After Hurricane Harvey
Spotted Seatrout Continued to Spawn During and After Hurricane Harvey
Jef Akst | Nov 16, 2018
Researchers recovered audio recordings of the fish’s mating calls in the eye of the storm.
Image of the Day: Plundered Plover
Image of the Day: Plundered Plover
Jef Akst | Nov 9, 2018
Nest predation of shorebirds that raise young in the Arctic are up threefold since the mid-20th century, and climate change may be to blame, according to a study.
Genetic Risk Factor for Erectile Dysfunction Identified
Genetic Risk Factor for Erectile Dysfunction Identified
Ashley P. Taylor | Oct 9, 2018
Researchers believe the genetic locus affects the regulation of another gene involved in sexual function.
Conservation Biologist and Placenta Expert Kurt Benirschke Dies
Conservation Biologist and Placenta Expert Kurt Benirschke Dies
Shawna Williams | Sep 14, 2018
He established the San Diego Zoo’s cryopreserved Frozen Zoo.
BPA and Its Replacements Have Same Effects on Mice
BPA and Its Replacements Have Same Effects on Mice
Kerry Grens | Sep 13, 2018
The plastic ingredients BPS and diphenyl sulfone cause chromosomal abnormalities, and the effects can last for generations.
Image of the Day: The Long and Short of It
Image of the Day: The Long and Short of It
Sukanya Charuchandra | Aug 20, 2018
For flycatchers, the attractiveness of male birds is tied to the length of their sperm.