Common implantation symptoms include cramping and spotting, or very light bleeding, but those same signs can also be indicative of a normal menstrual cycle. So how do you know when your symptoms ...

This is a preview. Log in through your library . Abstract Wild female martens (Martes americana) are apparently not sexually mature as yearlings, but wild males may reach sexual maturity as yearlings.

This study is led by Prof. Lei Jin and Dr. Lixia Zhu (Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology). Assisted reproductive ...

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 ...

Fertility researchers have used DNA fingerprinting for the first time to identify which embryos have implanted after in vitro fertilisation (IVF) and developed successfully to result in the births of ...

New information is unfolding on the genetic controls of an early turning point in pregnancy -- the changes in an embryo's cells that occur as it prepares to lodge in the wall of the uterus.

Scientists have discovered that they can generate induced blastoids, or iBlastoids, that emulate natural human blastoids. Because iBlastoids are built of reprogrammed skin cells, they represent ...

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