Thanks for all your answers.
Sorry, my question wasn't precise enought.
Apart from the pharyngeal nervous system and the rectal neurons, is there
another ENS component in other worms, which would be closer to the chordate
Developmental Biology Institute of Marseille
Luminy case 907
13288 Marseille Cedex 9
Tel : 18.104.22.168.97.33
Fax : 22.214.171.124.97.26
e-mail : pujol at ibdm.univ-mrs.fr