True of the following is/are-: (A) IgA crosses placenta, (B) Half life of IgG is 23 days, (C) IgD is heat stable, (D) IgE has highest carbohydrate content
Answer is B. Half life of IgG is approximately 23days Ref: Ananthanarayan & Panikers textbook of microbiology 9th edition pf:96