egg

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

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.  

Eggs from girls and from older women show higher rates of errors in chromosome number.

Videos reveal how a female squid fertilizes her eggs—one at a time and without spilling much stored sperm.

A new 3-D model plumbs the molecular intricacies of eggshell composition.

A project aims to preserve samples of the climate change–vulnerable animals for future restoration.

An investigation of fossilized teeth reveals that some dinosaurs took more than six months to hatch, hindering their abilities to procreate quickly and efficiently.

Why do so many human eggs have the wrong number of chromosomes?

A method that forces human eggs to divide can produce embryonic stem cells capable of division and differentiation with only one copy of each gene.

In response to speculation that groups have edited the DNA of human embryos, researchers request that gene editing of human reproductive cells be halted.

From stem cells, scientists generate early egg- and sperm-like cells in vitro.

Introducing tiny amounts of powdered egg into the diets of allergic children can cure the affliction.

Opinion is divided on a new paper showing that adult ovaries do not contain egg-making stem cells, contrary to the findings of two recent studies that themselves appeared to overturn longstanding dogma.

Researchers discover a 70-million-year-old egg that belonged to a small, bird-like meat-eating dinosaur.

Chemical cues dispersed by mussel eggs may attract sperm that are their perfect match.

New estimates of human mutation suggest that each of us harbor approximately 60 novel genetic mutations.