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. 2007 Jun 20;104(27):11453–11458. doi: 10.1073/pnas.0702041104

Fig. 3.

Fig. 3.

A slowly inactivating outward current in the axon is blocked by 4-AP and α-DTX. (A) Axonal (150 μm from soma) voltage steps activates a slowly inactivating outward current. (B) The slowly inactivating current is blocked by 4-AP (40 μM). (C) Subtraction reveals the 4-AP outward current to be rapidly activating, slowly inactivating, and containing a persistent component. (D) Axonal (110 μm) voltage steps in another cell. (E) α-DTX (100 nM) blocks the slowly inactivating current. (F) Subtraction reveals that α-DTX has effects similar to 4-AP.