👉 Hematoidin is a glycoprotein found in blood vessels that plays a crucial role in preventing clot formation. It is produced by the macrophages of the immune system and serves to limit bleeding or prevent the formation of clots, especially in the vessels that carry oxygen-rich blood. The term "hematoid" comes from the Greek word "hymé", which means "blood," referring to the fact that hematoidin is a component of blood cells responsible for delivering oxygen
