Most abundant immunoglobulin present in breast milk?: (A) IgA, (B) IgM, (C) IgG, (D) IgE
Answer is A. Most abundant type of Ig = IgA > IgD > IgG, IgM & IgE Anti-infective factors present in breast milk are: IgA (ratio of IgA: IgG is 100:1) Lymphocytes Anti- streptococcal factor Lysosome Lactoferrin Living cells.