neutrophils
eosinophils
basophils
Two kinds of leukocytes without granules in their cytoplasm ...
Neutrophils are our body's first line of defense against bacterial infections. After leaving nearby blood vessels, these cells recognize chemicals produced by bacteria in a cut or scratch and migrate "toward the smell".
Neutrophils deal with defense against bacterial or fungal infection and other very small inflammatory processes and are usually first responders to microbial infection; their activity and death in large numbers forms pus.
Neutrophils primarily engulf bacteria
Macrophages engulf larger particles; including old and infected red blood cells ...
Neutrophils and macrophages are phagocytic white blood cells. This migration of white blood cells causes the redness and inflammation associated with infection.
(Science: cell culture) chamber designed by Zigmond in which to test the ability of cells (neutrophils) to orient in a gradient of chemoattractant. The chamber is similar to a haemocytometer, but with a depth of only ca. 20m.
Neutrophils enter the tissue fluid by squeezing through capillary walls and phagocytozing foreign substances. Macrophages release white blood cell growth factors, causing a population increase for white blood cells. Lymphocytes fight infection.
granulocytes White blood cells (neutrophils, eosinophils, and basophils) bearing "granules" (vacuoles) in their cytoplasm that stain deeply.
Specifically, macrophages and neutrophils, which are often referred to as scavenger cells, actively ingest bacteria and other microorganisms they encounter in the body. These intruders are then digested with the help of lysosomes.
phagocytes White blood cells that can engulf (by phagocytosis) and destroy microorganisms including viruses and bacteria; cells in this category include neutrophils and monocytes.
 See also: Cells, Cell, Blood, Bacteria, Trans
  
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