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应用全细胞膜片钳技术，证明大鼠背根神经节（ＤＲＧ）中有７０．３％的细胞对Ｎ－甲基－Ｄ－天冬氨酸（ＮＭＤＡ）敏感，１８．９％的细胞对红藻氨酸（ＫＡ）敏感，５６．８％的细胞对使君子酸（ＱＡ）敏感，并观察到Ｍｇ（２＋）及甘氨酸（Ｇｌｙ）仅对ＮＭＤＡ激活电流有影响，而对ＫＡ和ＱＡ激活电流无作用。
Whole-cell patch-clamp technique was used to demonstrate that 70.3% of DRG neurons were sensitive to N-methyl-D-aspartate (NMDA), 18.9% Sensitive to KA, 56.8% of the cells were sensitive to geranium acid (QA), and Mg (2+) and Gly (Gly) were found to affect only the NMDA activation current while KA and QA activation currents No effect.