gestation

Genes associated with preterm birth and protecting the fetus from the mother’s immune system appear to be regulated by HAND2.

This evolutionarily ancient fish species has a lifespan that’s around five times longer than previously thought, and a gestation time of more than five years.

Victoria, a southern white rhino at the San Diego Zoo, was impregnated by artificial insemination on March 22 and, if all goes well, will birth the calf in summer 2019.

High-resolution MRI reveals that human fetal hearts rapidly develop their major structures within a four-day period.

Medication to prevent prematurity in humans harms cognitive flexibility in rats.

Biologist Christopher Coe answers readers’ questions about the prescient organ.