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4182679
Specific Immune Response
Description
According to OCR Biology Specification (used for summer 2015)
No tags specified
immune system
response
ocr
biology
as level
white cells
plasma cells
antibodies
pathogens
b cells
t cells
summer 2015
biology
a-level
Mind Map by
09-alice.lacey
, updated more than 1 year ago
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Created by
C R
almost 9 years ago
Copied by
09-alice.lacey
almost 9 years ago
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Resource summary
Specific Immune Response
Pathogen engulfed and partially digested by macrophages
Macrophage becomes antigen-presenting cell
Clonal selection to find correct T lymphocytes
Clonal expansion to reproduce T helper cells through mitosis
Release of cytokines (interleukins) to stimulate proliferation
Activation of B cells
Clonal expansion to reproduce B cells
Some differentiate to make plasma cells
Plasma cells manufacture antibodies
Some differentiate to make B memory cells
Memory cells circulate in body to provide immunological memory
B cells mature in bone marrow
T cells originate in bone marrow but mature in thymus gland
Clonal expansion to reproduce T killer cells
T killer cells search for infected cells
T killer cells attach to infected cells
T killer cells secrete toxic substances (hydrogen peroxide) into infected cells to kill cells and pathogens inside it
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