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.
Sandwich ELISA Protocol. An Enzyme-linked immunosorbent assay or Sandwich ELISA is a scientific technique used by researchers to detect the presence of an antibody or an antigen in a sample.An ELISA can also be used as a diagnostic tool in medicine.andwich ELISA Protocol. An Enzyme-linked immunosorbent assay or Sandwich ELISA is a scientific technique used by researchers to detect the presence of an antibody or an antigen in a sample.