Monozygotic twinning itself after elective single embryo transfer is uncommon, occurring in no more than roughly 3% of cases. Conjoined twins are far rarer still, with fewer than 20 cases reported ...

Life begins with a single fertilized cell that gradually transforms into a multicellular organism. This process requires ...

“Multiple” pregnancies used to be more common from IVF, but singleton pregnancies are now the gold standard in the fertility industry following a shift towards single embryo transfers. Fertility ...

Sean and Carolyn Savage turned to a surrogate after giving up baby to parents. April 7, 2011— -- Sean and Carolyn Savage, the Ohio couple who gave their baby back to his biological parents after ...

Descriptions of the embryo go back at least to the time of Aristotle, but it has only been since the late 19 th century and early 20 th century that advances in experimental approaches allowed ...

Using CRISPR-based engineering methods to prompt stem cells to organize into embryo-like structures, scientists were able to create 'programmable' cellular models of embryos without ever experimenting ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how a humble single cell becomes an organism fascinates scientists across ...