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Analysis of the sensory projection from the tarsal sensilla of the blow-fly (Phormia terraenovae Rob.-Desv., diptera)

Experimental degeneration of primary fibers

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The projection of the sensilla of the first tarsus into the prothoracic ganglion in Phormia terraenovae has been investigated by experimental anterograde degeneration. Degenerating sensory fibers are restricted almost exclusively to the ipsilateral side of the ganglion. The contacts between primary and secondary fibers manifest both, divergent and convergent organization. Some degenerating fibers are postsynaptic with regard to undegenerated fibers. The shape of postsynaptic densities permits the distinction of two types of Tsynapses. Synapses between secondary neurons and other undegenerated elements occur in close proximity to synapses with sensory axons.

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Geisert, B., Altner, H. Analysis of the sensory projection from the tarsal sensilla of the blow-fly (Phormia terraenovae Rob.-Desv., diptera). Cell Tissue Res. 150, 249–259 (1974). https://doi.org/10.1007/BF00222173

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Key words

  • Tarsal sensilla Blow-fly
  • Sensory projection
  • Anterograde degeneration
  • Contact chemoreceptors