Which Is the Third Step in a Direct ELISA Test

question 42

Multiple Choice

Which is the third step in a direct ELISA test?

• A) Antigen
• B) Antihuman immune serum
• C) Antibodies against the antigen
• D) Substrate for the enzyme

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Definitions:

Hairs

Filamentous biomaterials growing from the dermis of mammals, serving various functions including temperature regulation and sensation.

Placenta

An organ in mammals that develops during pregnancy, providing oxygen and nutrients to the fetus while removing waste products.

Fetal Membranes

The membranes that surround the developing fetus in the womb, including the amnion, chorion, and others, providing protection, nourishment, and waste removal.

Maternal Tissue

The tissue derived from the mother, particularly significant in plants and animals for providing nutrients to the offspring or embryo.