Talk with your caregiver about the best time to wean your baby. 1  Introducing solid foods: Weaning should begin when your baby is about 6 months old.  Weaning from breast milk: Your baby needs nutrients from breast milk until he is at least 12 months old.
Enzyme-linked secondary antibodies are applied as detection antibodies that also bind specifically to the antibody's Fc region (nonspecific). The plate is washed to remove the unbound antibody-enzyme conjugates. A chemical is added to be converted by the enzyme into a color or fluorescent or electrochemical signal.
Best Answer: The Enzyme-Linked ImmunoSorbent Assay, or (ELISA), is a biochemical technique used mainly in immunology to detect the presence of an antibody or an antigen in a sample.It uses two antibodies. One antibody is specific to the antigen.he other reacts to antigen-antibody complexes, and is coupled to an enzyme. This second antibody, which accounts for enzyme-linked in the test's name, can also cause a chromogenic or fluorogenic substrate to produce a signal.