A portion of fibrin, showing its fibrous structure and netlike arrangement of its fibers. In a short time after the blood is taken from the body it separates into two portions, by a process called coagulation or clot; the white substance which forms the upper part of the clot is called fibrin, and the red mass under it, the red particles. The fibrin is the material from which all solids of the body are formed.

Blood Clotting Fibers

A portion of fibrin, showing its fibrous structure and netlike arrangement of its fibers. In a short…