This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Paediatric Care in RCH: BW, BL, PEM, Breast Feeding, Subject name: Social & Preventive Medicine
[{'content': 'Most abundant immunoglobulin present in breast milk? \nSelect and explain. \nA. IgA, B. IgM, C. IgG, D. IgE', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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.', 'role': 'assistant'}]