MCQOPTIONS
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| 1. |
Whose secretion forms the pearl [MP PMT 1999] |
| A. | Prismatic layer |
| B. | Columnar epithelial cells of mantle |
| C. | Ciliated epithelial cells of mantle |
| D. | Connective tissue of mantle |
| Answer» C. Ciliated epithelial cells of mantle | |