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乌鳢出血性败血症是由嗜水气单胞菌及其产生的毒力因子引起的暴发性疾病。患病乌鳢肝实质结构严重受损,细胞索结构模糊,界限不清;肝细胞肿大,细胞核肿胀,空泡化,肝细胞大面积坏死解体,被染成浅色一片。病鱼肾脏结构也受损,肾单位数量显著减少,肾间质所占比例增大,淋巴细胞增多;肾小囊腔扩大;肾小管肿胀,部分肾小管上皮细胞变性,甚至坏死。脾脏淋巴组织松散,淋巴细胞减少,衰老细胞增多。
Wu haemorrhagic septicemia is caused by Aeromonas hydrophila and its virulence factors caused by outbreaks of disease. Sick Achyranthes pus liver parenchyma structure severely damaged, cell cord structure fuzzy, ill-defined; hepatomegaly, nuclear swelling, vacuolization, necrosis of large areas of liver cells, was dyed a light color. The diseased kidney structure was also impaired, the number of nephrons significantly decreased, the proportion of interstitium increased, the number of lymphocytes increased, the size of renal cysts enlarged, the tubules were swollen, and some of renal tubular epithelial cells degenerated and even necrosis. Spleen lymphatic tissue loose, lymphopenia, senescent cells increased.