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Pearl graft
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The pearl graft consists in introducing a nucleus (a mother-of-pearl ball made from the shell of freshwater bivalves) and a graft (a piece of healthy mantle) inside the sex gland (gonad) of a Pinctada margaritifera oyster. The technical skill of the grafter is essential to the success of the process. The best of them have an average retention rate of 65% at 45 days which can occasionally reach 90%. ,
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