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Scanning electron-microscopic (SEM) studies of the egg and oncomiracidium of Zeuxapta seriolae showed the following: the egg has a single filament at the pole opposite the operculum, its surface is smooth except for small rounded protuberances on the shell, and the fracture line between operculum and shell of the main part of the egg has numerous irregular transverse elevations. The non-ciliated surface...
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