近年来供实验用的小鼠群中、有严重的脱皮、搔痒、脱屑、局部脱毛、耳内出血及溃疡等皮肤病,经多次检查证实是由螨类寄生所引起的。 材料和方法 从病鼠头颈部、脱毛病变部或耳内出血及溃疡处,仔细检查取得寄生螨后用解剖针挑入置有75％酒精小指管内,然后取虫,用贝氏液封片后,进行观察。并取病变部位组织用10％福尔马林固定,石蜡切片、HE染色、观察其组织变化。 结果 一、经检查发现有二种螨 (一)鼠内螨(Myobia musculi)。雌雄虫形态均为长椭圆形,仅毛序和生殖器官有区别。雌虫:末端向前紧靠口器,第一对足高度变形、短粗,其关节不同程度地融合,具有一爪样突与前一,背一,内侧形成关节、闭合时与下一,后一外方的一个横纹 In recent years for experimental mice in the group, there are serious peeling, itching, scaling, local hair removal, ear bleeding and ulcers and other skin diseases, after several tests confirmed by the mites parasites caused. Materials and Methods From the diseased head and neck, hair loss lesions or intra-ear hemorrhage and ulcer, carefully check to obtain parasitic mites with a dissection needle into a small alcoholic tube placed 75%, and then take worms, packing with Bayesian fluid , Observe. The lesions were fixed with 10% formalin, paraffin sections and HE staining to observe the tissue changes. Results 1. Two species of mites (Myobia musculi) were found after examination. Male and female morphological shapes are long oval, only the difference between hair and reproductive organs. Female: the end of the mouth close to the mouth forward, the first pair of foot height deformation, stubby, the joints of varying degrees of integration, with a claw-like protrusion and the former, the back, the formation of the medial joint, closed and the next, After a foreign stripes