This article, the last in a series on blood cells, describes platelets. These small yet complex structures are important in coagulation and also have a significant role in the immune system, ...

Platelets are special blood cells tasked with preventing too much blood loss. These small and colorless structures are also known as thrombocytes and resemble cell fragments. Your body has three ...

Platelets are small types of blood cells that prevent excessive bleeding. It’s possible to develop low or high platelet counts related to a number of health conditions. Platelets are one of the ...

White blood cells, along with platelets and red blood cells, are key structures produced by your bone marrow. In particular, white blood cells play an important role in your immune system to help ...

When a vascular injury occurs, platelets in young mice form much smaller blood clots (left) than platelets in old mice (right), where the clot almost blocks the blood vessel. Fluorescence microscopy ...