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Subject: pig-toe shell Выражение встречается в следующем контексте: Inserting the nucleus into the oyster is a very delicate process. A nucleus created from pig-toe shell (freshwater mussels found in the beds of the U.S. Mississippi River) in the shape of a round bead is inserted into the pearl oyster. The pig-toe shell has genetic properties similar to the Akoya oyster and therefore lowers the chances of being rejected by the oyster. Заранее спасибо |
| Раковины моллюсков рода Fusconaia ("свиное копытце"). |
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