Microbiology If a patient were genetically unable to make J chains, which immunoglobulins would be affected? A IgG and IgA B IgM and IgE C IgM and IgA D IgG and IgM 💡 Explanation If a patient were genetically unable to make J chains, which immunoglobulins would be affected? ✓ Correct Answer: C. IgM and IgA