Expression of voltage-gated potassium (Kv)1 channels in juxtapara (JXP) nodes in wild-type (WT), transient axonal glycoprotein-1 (TAG-1)-/- and PSD-93-/- mice. Triple immunostaining of ankyrin G (AnkG) (B, D, F), contactin-associated protein (Caspr) (A-F) and Kv1.1 channels (A-F) (merged in B, D, F) in peripheral JXP-nodes of motor neurons (MNs) in WT (A, B), TAG-1-/- (C, D), and PSD-93-/- (E, F) mice. In A, C, E, immunostainings of Kv1.1 and Caspr, from nodes of Ranvier shown in B, D, F, respectively, have been shifted along the vertical dashed lines, in order to better visualize each immunostaining independently. Scale bar = 5 μm.