•ELISA is a biological technique used in immunology to
detect the presence of an
antibody or an antigen in a sample.
•An ELISA test uses components of the
immune system and chemicals to detect immune responses in the body (for
example, to infectious microbes).
•The ELISA test involves an enzyme (a
protein that catalyzes a biochemical reaction). It also involves an antibody or
antigen (immunologic molecules).
•ELISA tests are
widely utilized to detect substances that have antigenic properties, primarily
proteins.
•The substances detected by ELISA tests
include hormones, bacterial antigens and antibodies
•There
are 3 types:
1.Indirect ELISA
2.Sandwich ELISA
3.Competitive ELISA
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