- Red blood cell-carries oxygen
- White blood cell-kills bacteria and cleans up debris
- Platelet-helps heal wounds. Platelets are really thrombocytes. These are small fragments (pieces) of a cell called a megakaryocyte. The platelets take part in blood clots when injury occurs.
Discovery[change | change source]
Jan Swammerdam a scientist from the Netherlands was the first person to observe red blood cells under a microscope. Antoni van Leeuwenhoek, another scientist from the Netherlands, was the first to draw an illustration of "Red Blood Cells".