Abstract
We measured total IgA, IgM and ovalbumin (OA) specific IgA, IgM antibodies inbreast milk for 88 samples from 48 mothers, Total IgA and IgM levels were the highest on the second day after delivarly and these levels decreased rapidly with time, The levels of OA-specific IgA and IgM antibodies also revealed same tendency as those of total IgA and IgM.
Furthermore, OA-specific IgA antibody decreased first and then increased gradually after the peroral challenge with an egg.