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 - 卵子 個影片檔及 b 捲影像00:20
detailed view of the human reproductive system showing the ovary, fallopian tube, and uterus in a medical diagram. 3d animation - 卵子 個影片檔及 b 捲影像00:15
sequence of close-ups showing human eggs being harvested and stored in liquid nitrogen for future ivf treatment - 卵子 個影片檔及 b 捲影像00:12
close angle of sperm swimming down fallopian tube which opens into uterus. sperm heads visible at bottom of screen. egg present in middle of uterus. human body. - 卵子 個影片檔及 b 捲影像00:17
ivf artificial insemination icsi process under microscope fertilizing human egg with sperm needle reproductive medicine - 卵子 個影片檔及 b 捲影像00:07
sperm cells swim towards an egg cell in this microscopic animation. human reproduction concept - 卵子 個影片檔及 b 捲影像00:10
ivf procedure. ivf (in vitro fertilisation) is the fertilisation of an egg cell (centre) outside the human body. - 卵子 個影片檔及 b 捲影像00:20
human sperm, masses swimming, tilt down to sperm all around edge of egg-like sphere - 卵子 個影片檔及 b 捲影像00:24
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. - 卵子 個影片檔及 b 捲影像00:14
scientists injecting a cell with sperm cells in a laboratory setting for research and development purposes. 3d animation - 卵子 個影片檔及 b 捲影像00:12
close angle of uterus. ovarian egg in left corner. sperm swim from top to egg at bottom. human body. - 卵子 個影片檔及 b 捲影像00:25
laboratory assistant looking at zygotes under a microscope in a fertility laboratory - 卵子 個影片檔及 b 捲影像00:11
human oocyte cryopreservation, intracytoplasmic sperm injection on september 17, 2014 in new york city. - 卵子 個影片檔及 b 捲影像00:13人工授精
in this feminine hygiene instructional film, an illustration demonstrates the female reproductive system. sperm are seen heading up the fallopian... - 卵子 個影片檔及 b 捲影像00:17
parasitism (parasitic flatworms) - part 12 of 28. traces the development of parasitic flatworms, showing several life-cycle stages that have rarely been photographed before, including blood flukes and tapeworms. defines predation, mutualism, internal and - 卵子 個影片檔及 b 捲影像00:35