Pregnancy

By modifying 20 regions of the genome, scientists successfully bred mice with two male parents and raised them to maturity.

Fathers exposed to high stress in childhood had different epigenetic markers that may affect their offspring, though more research is needed.

The newborn had a birth defect that left a gap in his lower spine, through which tissue pushed out and formed a giant, red, balloon-like structure.

The inner lining of the small intestine nearly doubles in size during pregnancy and breastfeeding, according to new research in mice and human tissue.

A new mRNA therapy tested in mice may target the root cause of the potentially fatal pregnancy disorder preeclampsia.

Pain-sensing neurons exchange signals with immune cells that drive endometriosis, sparking the pain associated with the condition, new research suggests.

A new imaging technique enabled scientists to film every step of ovulation as it unfolds in mouse cells.

A new study suggests that endometriosis could be detected using a simple stool test, which could accelerate diagnosis rates.

A new "atlas" of early embryonic development in mammals suggests that the process is highly chaotic — but there is some method to the madness.

Researchers have developed a method of reversing the aging process in mouse egg cells.