neutrophil

Examples of neutrophil in the following topics:

• Pathogen Recognition

  • A neutrophil is also a phagocytic leukocyte that engulfs and digests pathogens .
  • A basophil is a leukocyte that, like a neutrophil, releases chemicals to stimulate the inflammatory response .
  • Neutrophils and monocytes leave the capillaries.
  • Neutrophils, dendritic cells, and macrophages release chemicals to stimulate the inflammatory response.
  • Neutrophils and macrophages also consume invading bacteria by phagocytosis.

• Innate Immune Response

  • In this compound light micrograph, purple-stained neutrophil (upper left) and eosinophil (lower right) are white blood cells that float among red blood cells in this blood smear.
  • Neutrophils provide an early, rapid, and nonspecific defense against invading pathogens.

• White Blood Cells

  • One of the two main groups are the granulocytes, which contain granules in their cytoplasm, and include the neutrophils, eosinophils, and basophils ( a).
  • (a) Granulocytes (neutrophils, eosinophils and basophils) are characterized by a lobed nucleus and granular inclusions in the cytoplasm.

• The Role of Blood in the Body

  • White blood cells (including neutrophils, monocytes, lymphocytes, eosinophils, and basophils) are involved in the immune response.

• Humoral Immune Response

  • Antibodies also opsonize pathogen cells, wherein they mark them for destruction by phagocytic cells, such as macrophages or neutrophils.
  • Antibodies may inhibit infection by (a) preventing the antigen from binding its target, (b) tagging a pathogen for destruction by macrophages or neutrophils, or (c) activating the complement cascade.

• Antibody Functions

  • Antibodies also mark pathogens for destruction by phagocytic cells, such as macrophages or neutrophils, because they are highly attracted to macromolecules complexed with antibodies.
  • Antibodies may inhibit infection by (a) preventing the antigen from binding to its target, (b) tagging a pathogen for destruction by macrophages or neutrophils, or (c) activating the complement cascade.

• Endocytosis

  • For example, when microorganisms invade the human body, a type of white blood cell called a neutrophil will remove the invaders through this process, surrounding and engulfing the microorganism, which is then destroyed by the neutrophil .

• Immunodeficiency

  • Neutropenia is one form in which the immune system produces a below-average number of neutrophils, the body's most abundant phagocytes.

• Connective Tissues: Bone, Adipose, and Blood

  • Neutrophils are phagocytic cells that participate in one of the early lines of defense against microbial invaders, aiding in the removal of bacteria that has entered the body.