Despite undergoing surgery, one egg retrieval and two successful embryo transfers, both pregnancies ended in heartbreak. "My ...

5 weeks is the time for most women that they start feeling pregnant. Now that the pregnancy has been confirmed, 5 weeks is the time for most women that they start feeling pregnant. With hormone ...

Two weeks is usually the moment when the central nervous system starts to appear in the embryo in a structure known as the "primitive streak." It's also roughly the stage at which an embryo can no ...

Scientists have struggled to keep embryos alive in the lab for longer than a week because at the seven-day point an embryo must implant in the uterus in order to thrive and grow. But researchers ...

It was a good week for the study of ancient animals as a team of researchers from China, the U.K. and Canada described an exquisitely preserved embryo that was found inside of a fossilized dinosaur ...

Researchers at Ohio State University (OSU) have grown a nearly complete human brain equivalent in size and structure to that of a five-week old fetus. Called a "brain organoid," it was ...

Weeks before the explosion, she had finally completed her egg retrieval at the clinic. Out of 27 eggs, only one viable embryo had formed.

SNEAK PEEK At 9.5 weeks of pregnancy, a human embryo is almost 16 millimeters long — about the size of a 1-cent euro coin. A new 3-D tool lets users check out (from left) the embryo’s skin ...

For women using IVF/intracytoplasmic sperm injection, SARS-CoV-2 infection within 10 weeks after embryo transfer may not negatively affect pregnancy, implantation and miscarriage rates ...

An opportunity for more research on ectopic pregnancies cannot be overlooked as controversy over these pregnancies erupted following Roe v. Wade being overturned.

Researchers at the University of Cambridge (UC) have allowed an embryo to grow in the lab for a full 13 days, brushing right up against the legal limit.

Researchers who study developing human embryos have long limited their experimentation to lab embryos that are no more than 14 days into development. Some scientists are now pushing that boundary.