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. 2021 Dec 1;7(49):eabj1215. doi: 10.1126/sciadv.abj1215

Fig. 4. Extracellular chloride ions are required for PHD expression.

Fig. 4.

(A) Schematics and representative traces of mEPSC and EPSC recordings in the indicated genotypes performed in standard or modified (Cl free) saline. Although vGlut-OE increases mEPSC amplitude in both saline conditions, no change in presynaptic neurotransmitter release is observed in vGlut-OE NMJs recorded in Cl-free saline, leading to enhanced EPSC amplitude and a failure to express PHD. (B to D) Quantification of average mEPSC amplitude (B), EPSC amplitude (C), and quantal content values (D) for the indicated genotypes and conditions (wild type, n = 15; vGlut-OE, n = 17; wild type Cl free, n = 12; vGlut-OE Cl free, n = 13). **P < 0.01 and ***P < 0.001. (E) Quantification of mEPSC and quantal content values normalized to baseline values (−vGlut-OE) for wild-type NMJs in standard or Cl -free saline. ***P < 0.001.