There are several types of white blood cells that help fight against foreign pathogens and infections. Granulocytes such as neutrophils, eosinophils and basophils are involved in inflammatory response and destruction of pathogens. Monocytes differentiate into macrophages after leaving the bloodstream and help phagocytose and digest cellular debris and pathogens. Lymphocytes consist of... https://articlescad.com/an-in-depth-look-at-blood-cancer-laboratory-testing-and-the-future-of-hematology-care-214095.html