Absence of cholinesterase activity in body wall homogenates from the sea anemone Bunodosoma caissarum Corrêa

Abstract

1. 1. Attempts to detect cholinesterase activity in body wall homogenates of the sea anemone Bunodosoma caissarum were made using gasometric and colorimetric techniques. 2. 2. No cholinesterase activity was found in the homogenates using either of these techniques. 3. 3. Control experiments for cholinesterase activity were performed using crude homogenates from the polychaete Eurythoë complanata and the marine fish Bathygobius soporator. 4. 4. An evolutionary line of acetylcholine-meditated transmission at the junction level is discussed.