Does C. elgans contain a peritrophic membrane lining the gut ? I would be grateful if anyone could cite appropriate references. Thankyou Ross Ross Tellam CSIRO Division Of Tropical Animal Production CSIRO Private Mail Bag 3 Indooroopilly 4068 QLD , Australia phone 61-7- 32142724 Fax 61-7- 3214 2882 email tellam at dance.tap.csiro.au