例文
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- The rostellum remains invaginated in the apex of the organ.
- The stigma, separated by the rostellum.
- The scolex bears a retractable rostellum armed with a single circle of 20 to 30 hooks.
- In addition the protoscolex of rostellum, while that of " T . saginata " has only an apical pit.
- Sometimes there is a small extension or little beak to the median stigma lobe, called "'rostellum " '.