White blood cells (WBCs) in our bodies help fight infections. There are various types of WBCs; each has its own way of fighting microbial infections. The most important WBC is called the neutrophil.

Platelets (also called thrombocytes) are small blood cell fragments made by your bone marrow. They help form blood clots to stop you from bleeding when you've been injured. Platelets are small cell ...

Having a low platelet count can affect your blood’s ability to clot. This can result in uncontrolled bleeding, which can sometimes require immediate medical attention. A low platelet count is called ...

Deb Hipp is a freelance health and medical writer and editor who lives in Kansas City, Missouri. She is a former investigative reporter with more than 25 years of experience as a journalist and writer ...