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Immunity Basics for Biology Students

The document compares innate and adaptive immunity, highlighting that innate immunity is present at birth, non-specific, and does not form memory, while adaptive immunity develops after exposure, is specific to antigens, and forms memory. Innate immunity includes physical barriers and various immune cells, whereas adaptive immunity involves B and T cells and lymphatic organs. Examples illustrate the functions of each type of immunity in response to infections.

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19 views2 pages

Immunity Basics for Biology Students

The document compares innate and adaptive immunity, highlighting that innate immunity is present at birth, non-specific, and does not form memory, while adaptive immunity develops after exposure, is specific to antigens, and forms memory. Innate immunity includes physical barriers and various immune cells, whereas adaptive immunity involves B and T cells and lymphatic organs. Examples illustrate the functions of each type of immunity in response to infections.

Uploaded by

avishank584
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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INNATE IMMUNITY ADAPTIVE IMMUNITY

Present since birth Develop after exposure to certain infection


Non-Specific to all foreign antigens Specific to specific antigen
It is inherited from parents It is acquired during lifetime
It does not form a memory of infection It forms memory of infection
It shows limited diversity It is highly diverse due to presence of molecules like
antibodies.
It consists of physical, and physiological barriers, It is composed of B cells and T cells, lymph nodes,
phagocytic leukocytes, dendritic cells, natural killer spleen, MALT
cells, skin, mucous membranes, fever, and PH.
E.g., white blood cells fighting bacteria causing E.g., Vaccination like chickenpox vaccine which
redness and swelling when we get a cut or wound provides memory to the body against the
chickenpox
First line of defense : Skin, Mucous membrane
Second line of defense : Neutrophils, Monocytes, Macrophage, interferon, fever.
Third line of defense : Specific immunity by T- and B-lymphocytes

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