从亚显微结构观察患有由柱状屈桡杆菌（Ｆｌｅｘｉｂａｃｔｅｒ　ｃｏｌｕｍｎａｒｉｓ）引起的鳜（Ｓｉｎｉｐｅｒｃａ　ｃｈｕａｔｓｉ）烂鳃 病的鳃、肝、肾组织和细胞的病变情况．结果表明：鳃、肝、肾组织和细胞均发生严重病变，其中鳃组 织细胞发生大面积坏死；肝、肾病变相对较轻，存在不同程度的病变，细胞从肿胀、变性及坏死解体， 坏死的细胞少见． The lesions of gill, liver, kidney and cells in the gill of Siniperca chuatsi caused by Flexibacter columnaris were observed from the sub-microstructure. The results showed that gill, liver and kidney tissues and cells were severely damaged, of which gill tissue cells developed large area necrosis. The pathological changes of liver and kidney were relatively mild with varying degrees of pathological changes. The cells developed from swelling, degeneration and necrosis, necrosis Cells rare.