The zygote implants itself into the uterine wall about 3 to 4 days after it has entered the uterine cavity. Implantation bleeding, if it happens, usually only lasts around 1 to 2 days. There are ...

In the early stages, they are called a zygote. They then progress to an ... where it will hopefully implant into your uterine lining. If implantation takes place, your body will start to secrete ...

Given that the cellular interactions culminating in implantation and placentation ... The initial stages of development, from fertilized ovum (zygote) to a mass of 12 to 16 cells (morula), occur ...

Their fringed ends collect the egg from the ovary, coaxing it in for fertilization. The fertilized zygote then descends into the uterus for implantation. “We really need to understand better the ...