what is a fish? - part 32 of 39. illustrates the major types of fishes. shows the anatomy of a typical fish and demonstrates characteristic behavior patterns of various kinds of fishes. underwater photography is used to reveal behavior patterns such as c - 精子 個影片檔及 b 捲影像00:35
fertilisation. animation of sperm cells attempting to penetrate a human egg. only one of these sperm cells fertilises the egg. fertilisation occurs when the sperms genetic material (deoxyribonucleic acid, dna) fuses with the eggs dna forming a zygote - 精子 個影片檔及 b 捲影像00:20
microscopic view of slow sperm cells swimming, a representation of male fertility or reproductive health - 精子 個影片檔及 b 捲影像00:09
close angle of sperm swimming down vaginal canal which opens into uterus. sperm heads visible at bottom of screen. egg present in middle of uterus. human body. - 精子 個影片檔及 b 捲影像00:14
asian woman technician peers through a microscope in veterinary andrology lab, assessing bull semen slide for count, motility, and morphology to certify quality for artificial insemination programs. - 精子 個影片檔及 b 捲影像00:11動物實驗
human sperm swimming, race; two tailed human sperm top left of frame later in shot, interference contrast - 精子 個影片檔及 b 捲影像00:16
close angle of uterus. ovarian egg in left corner. sperm swim from top to egg at bottom. human body. - 精子 個影片檔及 b 捲影像00:25
close-up of cryogenic storage tank with liquid nitrogen in veterinary andrology lab, technician lifting up semen straws for artificial insemination and genetic research. - 精子 個影片檔及 b 捲影像00:12人工授精
sperm donation; england: newcastle university:intmicroscopic shot of sperm swimmingfertility scientists workig in lab - 精子 個影片檔及 b 捲影像00:29
ivf artificial insemination icsi process under microscope fertilizing human egg with sperm needle reproductive medicine - 精子 個影片檔及 b 捲影像00:07
ivf artificial insemination icsi process under microscope fertilizing human egg with sperm needle reproductive medicine - 精子 個影片檔及 b 捲影像00:07
intracytoplasmic sperm injection (icsi) during in vitro fertilization procedure – close-up in medical lab - 精子 個影片檔及 b 捲影像00:15
an embryologist, oksana lyzohub explains were with reproductive cells are stored frozen in “ivmed” fertility center in central kiev, ukraine on... - 精子 個影片檔及 b 捲影像00:17
close angle of sperm swimming down vaginal canal which opens into uterus. sperm heads visible at bottom of screen. egg present in middle of uterus. human body - 精子 個影片檔及 b 捲影像00:30
sperm cells swim towards an egg cell in this microscopic animation. human reproduction concept - 精子 個影片檔及 b 捲影像00:10