text: 2.WHOⅡ型（ISKDC2a，2b）系膜增殖型肾小球肾炎，病变局限于系膜区，表现为程度不等的系膜细胞和基质增多，系膜区免疫沉积物阳性，仅有轻度节段性系膜增生者为2a型，系膜和系膜细胞增生为2b型。
entities.entity: WHOⅡ型
entities.label: dis
entities.entity: ISKDC2a
entities.label: dis
entities.entity: 2b
entities.label: dis
entities.entity: 系膜增殖型肾小球肾炎
entities.label: dis
entities.entity: 系膜细胞
entities.label: bod
entities.entity: 基质
entities.label: bod
entities.entity: 程度不等的系膜细胞和基质增多
entities.label: sym
entities.entity: 系膜区免疫沉积物阳性
entities.label: sym
entities.entity: 轻度节段性系膜
entities.label: bod
entities.entity: 轻度节段性系膜增生
entities.label: sym
entities.entity: 系膜
entities.label: bod
entities.entity: 系膜细胞
entities.label: bod
entities.entity: 系膜和系膜细胞增生
entities.label: sym