Ultrastructure of Fuzhou lsolate of Shrim p W hite Spot Disease Virus
Abstract: A high virulent isolate of White Spot Disease Virus has been got in Fuzhou. The virion is in cytoplasm. Intact virion is enveloped and bullet shaped, d=80-100 nm. There is no inclusion body in cell, but sometime a particular structure named occlusion body (some virions are occluded by membrane) in cytoplasm. Nucleocapsid, observed by negative stain, is rod shaped, and its length and width are various. It is possible that the isolate is different from other isolates of White Spot Disease Virus, so the isolate is named Fuzhou isolate of White Spot Disease Virus.