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Cell Recognition, Types: - Coggle Diagram
Cell Recognition
Cell surface molecules
Glycoproteins & Glycolipids
To act as antigens facilitating cell recognition and communication
Located on the plasma membrane
Involved in cell signaling and adhesion
Antigens
Definition:
Molecules that can provoke an immune response
Toxins
Antigens from other individuals (eg. in organ transplants)
Abnormal body cell antigens (eg. cancerous)
Pathogen Antigens
Immune Response
Phagocytosis
Phagocytes engulf pathogens and destroy them using lysozymes
Steps
Step 1: Phagocyte recognizes non-self antigens.
Step 2: Phagocyte engulfs the pathogen into a phagosome.
Step 3: Lysosomes release enzymes to digest the pathogen.
Step 4: Antigens presented on phagocyte's surface (antigen-presenting cell).
T Lymphocytes (T-cells)
Helper T cells
Activate B cells and phagocytes.
Cytotoxic T cells
Applications
Glycoproteins & Glycolipids
Types: