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Type 1b sensory neurons in mature Dimorphilus gyrociliatus dwarf male revealed by antiacetylated alpha-tubulin labeling.(A,A') A cross-section and schematic representation of the anterior surface. (B,B') A cross-section and schematic representation of the anterior part of the body. (C,C') A cross-section and schematic representation of the middle part of the body. (D) The closeup and drawing of sensory neuron №9. (E) The close-up and drawing of sensory neuron №7. (F) The close-up and drawing of sensory neuron №4. (G) The close-up and drawing of sensory neuron №2. (H) The close-up and drawing of sensory neuron №11. (I) The close-up and drawing of sensory neuron №8. (J) The close-up and drawing of sensory neuron №10. Abbreviations: avc-anterior cilia; E10,11-multiciliated cells of the dorsal ciliary field; dc-dorsal cilia; pvc-posterior cilia; testtestis; sv-seminal vesicles; sn1-sn20-sensory neurons1-20; *-nephridia.

Type 1b sensory neurons in mature Dimorphilus gyrociliatus dwarf male revealed by antiacetylated alpha-tubulin labeling.(A,A') A cross-section and schematic representation of the anterior surface. (B,B') A cross-section and schematic representation of the anterior part of the body. (C,C') A cross-section and schematic representation of the middle part of the body. (D) The closeup and drawing of sensory neuron №9. (E) The close-up and drawing of sensory neuron №7. (F) The close-up and drawing of sensory neuron №4. (G) The close-up and drawing of sensory neuron №2. (H) The close-up and drawing of sensory neuron №11. (I) The close-up and drawing of sensory neuron №8. (J) The close-up and drawing of sensory neuron №10. Abbreviations: avc-anterior cilia; E10,11-multiciliated cells of the dorsal ciliary field; dc-dorsal cilia; pvc-posterior cilia; testtestis; sv-seminal vesicles; sn1-sn20-sensory neurons1-20; *-nephridia.

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Dinophiliformia is a newly revealed clade within Annelida that is a sister group to Pleistoannelida. Dimorphilus gyrociliatus is a representative of this clade that has fascinated scientists with its high degree of sexual dimorphism. Both males and females are small, worm-like creatures that have specific ciliary structures: anterior ventral, poste...

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Context 1
... paired sensory neurons are symmetrically located on the left and right sides of the body. Sensory neurons №2, 4 and 5 are located in the anterior part of the body and organized into an anterior receptor group (sn2, sn4 and sn5, Figure 6A,A',F,G). ...
Context 2
... paired sensory neurons №7 are located near the dorsal ciliary field symmetrically near E11 cells on the left and right sides (sn7, Figure 6A,A',E). The paired sensory neurons №8 are located near the anterior ventral ciliary field and slightly posteriorly toward the anterior receptor group (sn8, Figure 6B,B',I). ...
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... paired sensory neurons №7 are located near the dorsal ciliary field symmetrically near E11 cells on the left and right sides (sn7, Figure 6A,A',E). The paired sensory neurons №8 are located near the anterior ventral ciliary field and slightly posteriorly toward the anterior receptor group (sn8, Figure 6B,B',I). The paired sensory neurons № 9 are located on the dorsal side, posterior to the dorsal ciliary field (sn9, Figure 6A,A',D). ...
Context 4
... paired sensory neurons №8 are located near the anterior ventral ciliary field and slightly posteriorly toward the anterior receptor group (sn8, Figure 6B,B',I). The paired sensory neurons № 9 are located on the dorsal side, posterior to the dorsal ciliary field (sn9, Figure 6A,A',D). The paired sensory neurons №10 are located at the lateral edge of the anterior ciliary field (sn10, Figure 6C,C',J), slightly posterior to sensory neuron №8. ...
Context 5
... paired sensory neurons № 9 are located on the dorsal side, posterior to the dorsal ciliary field (sn9, Figure 6A,A',D). The paired sensory neurons №10 are located at the lateral edge of the anterior ciliary field (sn10, Figure 6C,C',J), slightly posterior to sensory neuron №8. The paired sensory neurons №11 are located symmetrically on the lateral side of the body (sn11, Figure 6B,B',H). ...
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... paired sensory neurons №10 are located at the lateral edge of the anterior ciliary field (sn10, Figure 6C,C',J), slightly posterior to sensory neuron №8. The paired sensory neurons №11 are located symmetrically on the lateral side of the body (sn11, Figure 6B,B',H). Two sensory neurons №14 are located below the genital opening (go), at the posterior part of the body (sn14, Figure 6B). ...
Context 7
... paired sensory neurons №11 are located symmetrically on the lateral side of the body (sn11, Figure 6B,B',H). Two sensory neurons №14 are located below the genital opening (go), at the posterior part of the body (sn14, Figure 6B). These cells did not show 5-HT-like immunoreactivity. ...

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