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  • Title: [Ultrastructure of the osphradium of Siphonaria grisea (Mollusca, Pulmonata)].
    Author: Kamardin NN.
    Journal: Arkh Anat Gistol Embriol; 1985 Sep; 89(9):81-4. PubMed ID: 4062585.
    Abstract:
    By means of scanning and transmissive electron microscopic methods osphradium of Siphonaria grisea has been studied. The osphradium of the animal is presented as a small torulus formed by supporting ciliated cells. Among them bodies of receptory cells are situated; they are of smaller size and decorated with a bundle of microvilli. Central processes of the receptory cells, penetrating through a thick layer of the connective tissue, reach the subepithelial neural trunk. Concentration of the neural cells in the periphery of the trunk is small, and in the central area no chemical synapses are revealed. The data presented demonstrate a primitive structure of the osphradial chemoreceptory organ in Siphonaria.
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