Dalhousie University provides funding as a member of The Conversation CA-FR. In January 2017, I met Jiankui He, the now-infamous Chinese scientist who would go on to create the world’s first ...

Scientists set a new record for growing primate embryos outside the womb, as reported in the May issue of the journal Cell. For the first time, monkey embryos were cultivated in a lab for 25 days post ...

The early days of how an embryo develops are shrouded in mystery, because it pulls a kind of vanishing act. Once a sperm finds an egg, it begins a roughly weeklong journey to the uterus, becoming a ...

Scientists based in China have created a monkey chimera with two sets of DNA, experimental work they say could ultimately benefit medical research and the conservation of endangered species. The ...

The early beginnings of an embryo as it transforms from a clump of cells to a tiny human is a bit of a mystery — scientifically speaking. We know many of the broad strokes, but there are a lot of ...

A 25-day-old monkey embryo stained with fluorescent dye for visibility. Credit: Zhai et al/Cell/DOI 10.1016/j.cell.2023.04.019 Scientists have successfully nurtured lab-grown monkey embryos for 25 ...

Scientists have cultivated monkey embryos in the laboratory long enough to watch the beginning of organ formation and the development of the nervous system — milestones that are difficult to observe ...

Two research groups have independently produced human embryonic stem-cell lines from embryos cloned from adult cells. Their success could reinvigorate efforts to use such cells to make ...

The majority of fertilized eggs die and are resorbed into the body. ZEISS Microscopy/Flickr, CC BY-SA As an evolutionary biologist whose career has focused on how embryos develop in a wide variety of ...

Only about one out of three conceptions leads to birth. 1 Approximately a third of embryos fail to attach to the uterus, while another third is lost after the embryo implants. “Human reproduction is ...