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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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What is the percentage of immunoglobulins present in proteins?
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The correct answer is  Immunoglobulins constitute 20 to 25% of total serum proteins. Based on physiochemical and antigenic differences, five classes of immunoglobulins have been recognized: IgG, IgA, IgM, IgD, and IgE.(Ref: Ananthanarayan 9th edition, p93)