Ultrastructure and growth of the sea urchin tooth

  title={Ultrastructure and growth of the sea urchin tooth},
  author={Dr. Ernst Kniprath},
  journal={Calcified Tissue Research},
Individual sea urchin teeth consist of many elements, each secreted by a syncytium formed for the purpose. The numerous syncytia of each tooth take up secondary connection with one another in the vicinity of needles and prisms. The elements of the primary tooth skeleton are surrounded by cytoplasm and are therefore intracellular. Following the origin of a syncytium in the plumula, a new tooth element sheath originates in the form of a vesicle, which develops a unified crystallization cavity in… CONTINUE READING


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