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在发病的皱纹盘鲍（HaliotisdiscushannaiIno）幼鲍的足、内脏团、外套膜的血细胞质内，发现一种直径为90～140um的球形病毒粒子，带双层囊膜，无包涵体。负染病毒粒子与超薄切片大小形态相同。用被病毒感染的患病幼鲍感染健康鲍获同样症状，死亡率为50％。并于人工感染死亡鲍鱼体内观察到同样病毒。
Within the cytoplasm of the foot, visceral mass and mantle of the diseased Haliotis discus hannai Ino, a spherical virus particle with a diameter of 90-140 μm was found in the cytoplasm of blood vessels with a double capsule with no inclusion bodies. Negative stained virus particles and ultra-thin slices the same size and shape. Infected with the virus infected sick baby abalone infected the same symptoms, the mortality rate was 50%. The same virus was also observed in abalone that died of artificial infection.