Confronting Subsurface Cisternae in Chick Embryo Spinal Ganglia

Subsurface cisternae (SSC's) have been described in several types of conduct ing tissue (1-6), and in a cul tured neoplastic cell line (7). In some of these cases (2, 3, 7), paired SSC's appeared opposite each other in apposing cells, a configurat ion referred to as subsurface confronting cisternae (7). This note demonstra tes the existence of SSC's in a t ransient confronting configurat ion in a developing normal ver tebra te tissue, the sensory neuroblas t of the chick.