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Effect of Ribonuclease on Shell Regeneration in Ariophanta sp.


IT is supposed that the process of shell growth in molluscs consists of two phases. During the first step there is the elaboration of a protein membrane, and in the second mineralization of this membrane takes place1,2. Wagge has suggested that in Helix aspersa, which can rapidly repair its shell if this be damaged, the regeneration of the shell is brought about by the amœbocytes, which first lay down an organic framework that later on becomes calcified. Since ribonucleic acid is concerned with synthesis of proteins3,4, which in this case form an integral part of the shell, we have tried to assess its role in the regeneration of the shell in the snail Ariophanta sp. (Pulmonata).

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NAIR, K., MUTHE, P. Effect of Ribonuclease on Shell Regeneration in Ariophanta sp.. Nature 192, 674–675 (1961).

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