Neutrophil
![](/Images/godic/202501/29/Neutrophils0010.jpg")
![Neutrophil granulocyte migrates from the blood vessel to the matrix, secreting proteolytic enzymes, in order to dissolve intercellular connections (to the improvement of its mobility) and envelop bacteria through phagocytosis.](/Images/godic/202501/29/NeutrophilerAktion0010.png")
![Hypersegmented neutrophil.](/Images/godic/202501/29/Hypersegmented_neutrophil_-_by_Gabriel_Caponetti,_MD0010.jpg")
![HSC=Hematopoietic stem cell, Progenitor=Progenitor cell, L-blast=lymphoblast, Lymphocyte, Mo-blast=Monoblast, Monocyte, Myeloblast, Pro-M=Promyelocyte, Myelocyte, Meta-M=Metamyelocyte, Neutrophil, Eosinophil, Basophil, Pro-E=Proerythroblast, Baso-E=Basophilic erythroblast, poly-e=Polychromatic erythroblast, Ortho-E=orthochromatic erythroblast, Erythrocyte, Promegakaryocyte, megakaryocyte, Platelet](/Images/godic/202501/29/Hematopoiesis_simple.svg0010.png")
Neutrophil (also known as neutrophils or occasionally neutrocytes) are the most abundant type of granulocytes and the most abundant (40% to 75%) type of white blood cells in most mammals. They form an essential part of the innate immune system. Functionality varies in different animals.