养殖牙鲆淋巴囊肿病的电镜观察

对养殖牙鲆中发生的似淋巴囊肿病进行了细 胞的电镜超微结构观察。结果指出，在囊肿细胞内有大量形态一致、大小为260～270nm的典 型虹彩病毒。因病毒的形态和大小与国外报道的淋巴囊肿病毒相同，故研究从电镜学的角度 确认供试牙鲆所患疾病是淋巴囊肿病(Lymphocystis disease,LD)，该病毒为虹彩病毒科的 淋巴囊肿病毒(Lymphocystis disease virus,LDV)。该项工作系国内首次全面报道了病鱼主 要组织细胞的电镜观察结果，发现LD病毒存在于囊肿、心脏、头肾、脾脏、肠和鳃中。

Electron Ultramicroscopic Observation on Lymphoc ystis Disease of the Left-eyed Flounder Paralichthys olivaceus

This paper makes an electron ultramicroscopic observatio n of the cells in the lymphocystis disease occurring in the cultured left-eyed flounder Paralichthys olivaceus.The results indicate that in the cells of th e cyst there are a large number of typical iridovirus which are of identical mor phology and from 260～270nm in size. Viewed from the angle of an electron micros copic study, this disease of P.olivaceus is defined as a lymphocystis diseas e and the virus as the lymphocystis virus which belongs to Iridoviridae.This pap er also reports the electron ultramicroscopic observation of the major tissues o f the diseased fish.And the lymphocystis virus is discovered in tumors,heart,kid ney,spleen,intestine and gills.