Primary change Single scattered cell necrosis or apoptosis. Direct effect of virus or immunocomplex.
单个分散的细胞坏死或凋亡，由于病毒或免疫复合物的作用。
2
Deposites of intercellular space indicate that there are antigen antibody immunocomplex. Mast cells are of an important role in pathogenesis of psoriasis.