Morphological and electrophysiological properties of C-cells in bullfrog dorsal root ganglia.
Dissociated bullfrog dorsal root ganglion cells were voltage-clamped in the whole-cell configuration. Small spheroidal C-cells had a mean diameter of 14-30 microns and shared about 10% of the total population of the cells. The C-cells were characterized by a prominent calcium-activated potassium current underlying a hyperpolarization following the action potential. In contrast, a hyperpolarization-activated cationic inward rectifier was missing in all C-cells tested. These properties were completely different from those which have been observed for large spheroidal A-cells.
Tokimasa
T
T
Department of Physiology, Kurume University School of Medicine, Japan.
Shiraishi
M
M
Akasu
T
T
D000818:Animals; D002118:Calcium / Q000502:physiology; D004594:Electrophysiology; D005727:Ganglia, Spinal / Q000166:cytology* / Q000502:physiology / Q000648:ultrastructure; D008564:Membrane Potentials; D011188:Potassium / Q000494:pharmacology / Q000502:physiology; D011892:Rana catesbeiana; D012964:Sodium / Q000502:physiology; D013779:Tetrodotoxin / Q000494:pharmacology
D013779:Tetrodotoxin; D012964:Sodium; D011188:Potassium; D002118:Calcium