Primary and Secondary Immune Responses
The immune response due to first encounter with an antigen takes a longer time, feeble and declines rapidly. After the initial contact with an antigen, there is a period of several days during which no antibody is present, then there is a slow rise in the antibodies, followed by..
Proteins
Proteins - Proteins, which constitute about 10 to 12% of the cell contents, are macromolecules having a significant role in the metabolism of a cell. Proteins are polymers of amino acids. Each protein is a linear, unbranched, polypeptide molecule. The order in which amino acids occur is specific fo..
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