Women’s Cervical Mucus Prefers Some Sperm Over Others 
Women’s Cervical Mucus Prefers Some Sperm Over Others 
In human male-female pairs with a less similar suite of genes for human leukocyte antigens, sperm fare better when exposed to cervical mucus.
Women’s Cervical Mucus Prefers Some Sperm Over Others 
Women’s Cervical Mucus Prefers Some Sperm Over Others 

In human male-female pairs with a less similar suite of genes for human leukocyte antigens, sperm fare better when exposed to cervical mucus.

In human male-female pairs with a less similar suite of genes for human leukocyte antigens, sperm fare better when exposed to cervical mucus.

infertility
Single-Cell Analysis of Ovarian Cortex Fails to Find Stem Cells
Single-Cell Analysis of Ovarian Cortex Fails to Find Stem Cells
Amy Schleunes | Mar 6, 2020
The controversial oogonial stem cells eluded a team of Swedish researchers who mapped high-quality tissue samples of the human ovary, prompting more questions about the cells’ existence.  
Baby Born from Egg that Was Matured and Frozen in the Lab
Baby Born from Egg that Was Matured and Frozen in the Lab
Catherine Offord | Feb 19, 2020
A cancer patient who underwent the new fertility preservation procedure successfully gave birth five years after her immature eggs were collected.
Image of the Day: Old Ovaries
Image of the Day: Old Ovaries
Amy Schleunes | Feb 6, 2020
Oxidative stress associated with aging damages ovarian cells in both humans and nonhuman primates.
Human Testicles Contain Endocannabinoid System Components
Human Testicles Contain Endocannabinoid System Components
Ruth Williams | Sep 19, 2019
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.
Fertility Clinics Sought Advice from Scientist Who CRISPRed Babies
Fertility Clinics Sought Advice from Scientist Who CRISPRed Babies
Chia-Yi Hou | May 29, 2019
Emails reveal that a facility in Dubai and others have asked geneticist He Jiankui for help in gene-editing embryos.
“Three-Parent” IVF Trialed for Infertility
“Three-Parent” IVF Trialed for Infertility
Shawna Williams | Jan 25, 2019
A company announces the first pregnancy in a study of whether donor mitochondria can boost IVF’s odds of success.
Opinion: Three-Parent Embryos—A Slippery Slope?
Opinion: Three-Parent Embryos—A Slippery Slope?
John D. Loike, Alan Kadish | Jun 14, 2018
The use of pronuclear transfer to treat infertility must first be backed by evidence it can work in cases where parents seek to avoid mitochondrial mutations.
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. 
Image of the Day: Embryoid
Image of the Day: Embryoid
The Scientist Staff | Aug 11, 2017
Using human pluripotent stem cells, scientists engineered an amniotic sac-like structure, potentially useful for uncovering the elusive cellular signals that lead to infertility.