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Uploaded by silvesyt on Oct 1, 2007
Phase-contrast microscopy: human spermatozoa penetrating cervical mucus in vitro. Once into the cervical mucus, the spermatozoa travel in lines along molecular tracks made of highly hydrated, long glycoproteins. A one-way climbing.
Film & Animation
Standard YouTube License
Yeh i remember that day.. got stuck in traffic for about 4 hours. Then everyone got lazy and i won...
AGWDanimations 2 years ago 34
Godspeed little spermies!
AngelCuddle 4 years ago 14
It's like a metropolis of love
3x0rcyst3m 2 years ago
When sperm attacks....
anoellak 2 years ago
I love my sperm. They're so awesome!
mattcg90 2 years ago
fucking awesome.
itcoll 3 years ago
WOWOWOWOW
dragonslayerking123 3 years ago
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Yeh i remember that day.. got stuck in traffic for about 4 hours. Then everyone got lazy and i won...
AGWDanimations 2 years ago 34
Godspeed little spermies!
AngelCuddle 4 years ago 14