Sixty percent of miscarriages are caused by the failure of an embryo—the developmental stage before a fetus—to implant in the woman’s uterus. Part of the problem is that researchers have no idea how ...

Analyzing embryo movements in uteruslike environments could offer clues to improving the success rate of in vitro ...

Scientists have captured the process of an embryo implanting in the uterus for the first time. Contrary to expectations, it has been revealed that the human embryo penetrates deeply into the uterine ...

Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilizes it. This fundamental step in procreation happens dynamically and seemingly without ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. As an evolutionary biologist whose career ...