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.
The Enzyme-Linked Immunosorbent Assay (ELISA) is a technique used to detect antibodies or infectious agents in a sample.or an antigen ELISA, antibodies are bound to a plastic surface, a sample is added and if antigens from the virus we are testing for are present they will stick to the antibodies. This test then proceeds in the same way as the antibody ELISA. Figure 1. Detection of antigen-antibody binding (IFA and ELISA tests).