Platelet
The Free Dictionary
By Farlex
Tiny disc-shaped structure found in the blood, which helps it to clot. Platelets are not true cells, but membrane-bound cell fragments without nuclei that b READ MORE http://www.thefreedictionary.com/blood+platelets
Once upon a time... Life - The tiny platelets (1 of 3)
Uploaded by Isgota
Video by Procidis
This is the first of three videos on platelets; this video is 8:03 minutes. The other two can be acce READ MORE http://www.youtube.com/watch...