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 fertilization and developed successfully to result in the births of ...
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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results