A faithful model of the human blastocyst has been developed which replicates key phases of very early development from 4 to 13 days post fertilization, including attaching to layers of ...

Please provide your email address to receive an email when new articles are posted on . Compared with in vitro culture, blastocyst formation from Invocell intravaginal culture performs slightly better ...

The first steps of human development—those that occur within the first few weeks of pregnancy—remain mysterious in many ways. Within a week of fertilization, human embryos form a blastocyst, which ...

To better understand the earliest stages of human growth, researchers can examine donated embryos or human embryonic stem cells, both of which are in limited supply, or address their questions with ...

Newly created “blastoids” could give scientists a faster and simpler way to research embryonic development than using fertilized human eggs. Made of human stem cells, these blastoids are the most ...

Reviewed by Michael Greenwood, M.Sc. Fertilization is defined as a process where gametes (an egg and sperm) join together to form a full zygote. Both the sperm and egg contain a single set of 23 ...

The embryos of many species can stop developing when starved of nutrients, only to restart the process once these are restored – and scientists may have figured out how they do it. In the early stages ...