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5027140
Immunity
Description
AS - Level Biology Unit 1 Mind Map on Immunity, created by humza tahir on 04/04/2016.
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biology unit 1
as - level
Mind Map by
humza tahir
, updated more than 1 year ago
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Created by
humza tahir
over 8 years ago
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Resource summary
Immunity
Immune Response
Phagocytosis
recognise foreign anitgen/bacteria
form Phagocytic Vacuole
lyszome enzymes secreted into vacuole
bacteria/antigen gets hydrolysed
antigen may get used for antigen presentation
T-Cells
Helper T-Cells
Stimulate B-Cells to secrete antibodies
Stimulate Cytoxic T-cells to kill abnormal cells
T-Memory Cells
Remember Antigens person was exposed to
B-Cells
Complementary to one antigen
Clonal selection- selection of correct antibody
Divide into plasma cells and antibodies are secreted
B-Memory cells remember complementary antibody for the antigen
Types of Response
Cellular
T-Cells & other immune system cells e.g. Phagocytes
Humoral
B-Cells and clonal selection (production of antibodies)
Primary & Secondary Response
Primary
Slow response
No T-memory cells
No B-memory cells
Some T & B Memory cells produced
Secondary
Faster
Memory cells are present from primary response
Faster clonal selection
Faster and more anitbodies produced
Types of Immunity
Active
Natural - immune after catching a disease
Passive - Immune after vaccination
Passive
Natural - baby getting antigens from mother
Artificial - injection of antibodies produced by someone else
Antigenic Vriation
Same Bacteria different antigen
Slower immune response
Primary Response for each strain
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