Summary
(1) The basiconic sensilla on the antennae of Calliphora resemble other insect epidermal sensilla; one or several bipolar sense cells are surrounded by three non-neural cells. (2) The apical cell membrane of the tormogen cell(one of the three accessory cells) forms microvilli coated internally with particles. (3) In the (extracellular) outer receptor-lymph space hyaluronic acid can be demonstrated histochemically. (4) Demonstration of non-specific alkaline phosphatase, Mg2+-activated ATPase, and the presence of mitochondria in the apical part of the tormogen cell suggest active transport processes through these cells into the outer receptor-lymph space.
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Gnatzy, W., Weber, K.M. Tormogen cell and receptor-lymph space in insect olfactory sensilla. Cell Tissue Res. 189, 549–554 (1978). https://doi.org/10.1007/BF00209140
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DOI: https://doi.org/10.1007/BF00209140