Cells at Work!: Platelet Construction
1m
A group of platelets struggle to unload the materials needed to "fix" a road, referring to a blood vessel of the body. Red Blood Cell and White Blood Cell help them aside from their mission of finding the invading pneumococcus.
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SUSAN PAGE
8 months agoSarah Hern
8 months agoDeanna Peters
8 months agoMelissa
8 months ago