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Figure 4


Fig. 4. Effects of surgical ablation of one of the salivary neurones SN1 or SN2 on unit activities of a salivary duct nerve (SDN). (A,B) Spontaneous spike activity of an SDN 10 min before (left) and 10 min after (right) surgical ablation of a part of the suboesophageal ganglion (SOG). In A, a lower-frequency unit with the largest amplitude disappeared after surgery, and post-mortal backfilling of the SDN revealed elimination of the cell body and some dendrites of SN1 (C). In B, a higher-frequency unit with the second-largest amplitude disappeared after surgery, and post-mortal histological examination revealed ablation of the cell body and some dendrites of SN2 (D). Vertical bars, 2 mV; horizontal bars, 1 s (A,B); 100 µm (C,D). The SOG is viewed dorsally in C and D.





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