[Acetylcholine receptors and acetylcholinesterase activity in cultured chick ciliary ganglia].

Acetylcholine receptor number and the acetylcholinesterase activity have been studied in organ-cultured chick ciliary ganglia. Receptor number decreases progressively reaching minimum value after two days of culture. Acetylcholinesterase activity decreases slowly reaching at day 3 the 75% of the original value. The biological significance of these data is discussed in relation to the ganglion disconnection from the periphery and from the central nervous system.