👉 Fibrins are a type of glycoprotein involved in the transport of substances across cell membranes. They have been found to be present on the surface of many different types of cells, including neurons and muscle cells. The exact mechanism by which fibrins function remains largely unknown, but they have been proposed to play a role in various cellular processes such as signal transduction, neurotransmission, and cell adhesion. Fibrins are primarily composed of two types of glycoproteins: the alpha