of the blastocyst structure

and animal artificial baby biology blastocyst blastoderm blastopore blastula cell development diagram division egg embryo embryology embryonic female fertility fertilization fertilized gastrula growth gynecology health human illustration implantation infertility insemination invaginating male medical medicine morula mulberry obstetrics oocyte ovulation ovum pregnancy reproduction reproductive science segmentation sperm stage stem structure vector vitro zygote