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.

spermatogenesis
Image of the Day: Sperm Protectors
Image of the Day: Sperm Protectors
The Scientist Staff | Aug 18, 2017
Among their many functions, macrophages in mouse testes guard sperm against attacks by other immune cells. 
Week in Review: February 22–26
Week in Review: February 22–26
Jef Akst | Feb 26, 2016
Questions about how E. coli evolves; spermatids in a dish; fighting bacteria with virus-like molecule; what drives metastasis; antibodies fight Ebola in monkeys
Toward Making Sperm in the Lab
Toward Making Sperm in the Lab
Rina Shaikh-Lesko | Feb 25, 2016
Researchers devise a technique for creating gametes from murine embryonic stem cells.
Surrogate Genes Enable Reproduction
Surrogate Genes Enable Reproduction
Jyoti Madhusoodanan | Jan 28, 2016
Increasing the expression of two genes from non-Y chromosomes restores spermatogenesis in male mice that lack Y chromosomes.
Sperm From Ovaries
Sperm From Ovaries
Anna Azvolinsky | Jun 11, 2015
With the deletion of a single gene, female Japanese rice fish can produce sperm. 
Sperm Stem Cell Maintenance
Sperm Stem Cell Maintenance
Jenny Rood | Mar 2, 2015
A missing transcription factor puts an early end to sperm production in mice.
Fat Dads’ Epigenetic Legacy
Fat Dads’ Epigenetic Legacy
Kate Yandell | Feb 7, 2013
Children with obese fathers show epigenetic changes that may affect their health.
Creating Sperm from Skin
Hayley Dunning | Aug 30, 2012
Researchers create early stage sperm cells from induced pluripotent stem cells, raising hopes that infertile men could be fathers.
Hope for Male Contraception
Sabrina Richards | Aug 16, 2012
A small molecule that inhibits a protein important for chromatin organization can cause reversible sterility in male mice.