How primary immune response differ from secondary immune response?

1.	How primary immune response differ from secondary immune response?
Answer» Primary Immune Response: 1. It occurs as a result of primary contact with an antigen. 2. Antibody level reaches peak in 7 to 10 days. 3. Prolonged period is required to establish immunity. 4. There is rapid decline in antibody level. 5. It appears mainly in the lymph nodes and spleen. Secondary Immune Response: 1. It occurs as a result of second and subsequent contacts with the same antigen. 2. Antibody level reaches peak in 3 to 5 days. 3. It establishes immunity in a short time. 4. Antibody level remains high for longer period. 5. It appears mainly in the bone marrow, followed by the spleen and lymph nodes

Answer»

Primary Immune Response:

1. It occurs as a result of primary contact with an antigen.

2. Antibody level reaches peak in 7 to 10 days.

3. Prolonged period is required to establish immunity.

4. There is rapid decline in antibody level.

5. It appears mainly in the lymph nodes and spleen.

Secondary Immune Response:

1. It occurs as a result of second and subsequent contacts with the same antigen.

2. Antibody level reaches peak in 3 to 5 days.

3. It establishes immunity in a short time.

4. Antibody level remains high for longer period.

5. It appears mainly in the bone marrow, followed by the spleen and lymph nodes

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