see more?

How a sperm fertilizes an egg


Video сomments

Mikajin 4 years ago
This brilliant phrase is necessary just by the way
Mezisida 4 years ago
What words... super, magnificent idea
Shadal 4 years ago
I am sorry, that I interfere, but you could not paint little bit more in detail.
Sazil 4 years ago
I am sorry, that I interrupt you, but, in my opinion, this theme is not so actual.
Sajinn 4 years ago
Excuse, that I interfere, but it is necessary for me little bit more information.

Say a few words