| Immunoglobulins | Functions |
|---|---|
| (A) IgG | (I) Protects the body surface |
| (B) IgA | (II) Mediates reaginic hypersensitivity |
| (C) IgM | (III) Protects the body fluids |
| (D) IgE | (IV) Protects the blood stream |
| Deficiency Syndrome | List-II | |
|---|---|---|
| (A) | C1 inhibitor | (II) Hereditary angioneurotic oedema |
| (B) | C1, C2, C4 components | (III) Systemic lupus erythematosus and other collagen vascular diseases |
| (C) | C3 and its regulatory protein C3b inactivator | (IV) Recurrent pyogenic infections |
| (D) | C5, C6, C7, C8, C9 components | (I) Bacteremia, mainly with Gram negative diplococci: toxoplasmosis |