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*IgG or IgM
 
*IgG or IgM
 
*Complexes deposit in tissue -> fix complement -> cytokines and othe factors attrack neutrophils -> release lysosomal enzymes, activation of complement and coagulation, platelet aggregation -> tissue damage
 
*Complexes deposit in tissue -> fix complement -> cytokines and othe factors attrack neutrophils -> release lysosomal enzymes, activation of complement and coagulation, platelet aggregation -> tissue damage
*Immune complex vasculitis -> [[General Pathology - Haemorrhage#Purpura haemorrhagica|purpura haemorrhagica]]
+
*Immune complex vasculitis -> [[Haemorrhage - Pathology#Purpura haemorrhagica|purpura haemorrhagica]]
 
*Includes:
 
*Includes:
 
**[[Skin Immunologic - Pathology#Lupus erythematosus|Systemic lupus erythematosus]]
 
**[[Skin Immunologic - Pathology#Lupus erythematosus|Systemic lupus erythematosus]]