Which of the following types of cells are antigen presenting cells? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Only eosinophils b Question Homework Unanswered с d e Platelets and macrophages Only macrophages Only neutrophils Macrophages and dendritic cells

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
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Which of the following types of cells are antigen presenting cells?
Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.
a Only eosinophils
b
Question
Homework. Unanswered
с
d
e
Platelets and macrophages
Only macrophages
Only neutrophils
Macrophages and dendritic cells
Unanswered
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Transcribed Image Text:Which of the following types of cells are antigen presenting cells? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Only eosinophils b Question Homework. Unanswered с d e Platelets and macrophages Only macrophages Only neutrophils Macrophages and dendritic cells Unanswered Submit
Expert Solution
Step 1

Antigen presenting cells(APCs)

These are special cells which includes macrophages, B lymphocytes, and dendritic cells, are distinguished by 2 properties:

  • They express class ll MHC molecules on their membranes, and 
  • They are able to deliver a co-stimulatory signal that is necessary for TH cell Activation.

Role of an antigen presenting cell(APC 

  • Phagocytosis of enemy cell(antigen).
  • Fusion of lysosome and phagosome.
  • Enzymes start to degrade enemy cell.
  • Enemy cell broken into small fragments.
  • Fragments of antigen presented on APC surface.
  • Leftover fragments released by exocytosis.

 

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