A 41 y.o. woman complains of
weakness, fatigue, fever up to 380C, rash
on the face skin, pain in the wrists and
the elbows. On physical examination:
erythematous rash on the cheeks with
"butterfly"look, the wrists and elbow joints
are involved symmetrically, swollen,
sensitive, friction rub over the lungs,
the heart sounds are weak, regular, HR-
88/min, BP- 160/95 mm Hg. CBC shows
anemia, leucopenia, lymphopenia; on urine
analysis: proteinuria, leukocyturia,
casts. What is the main mechanism of disease
development?
Select one of the following: