We have established two resource initiatives for the scientific 
community to collaborate on the creation, integration and use of common 
terminologies, vocabularies and ontologies for application in predictive 
toxicology (including reuse of existing medical, biological and chemical 
ontologies):

OpenTox Collaborative Ontology Development (based on Collaborative Protege):
http://www.opentox.org/dev/ontology/collaborative_protege

OpenToxipedia (based on Semantic Media Wiki)
http://www.opentoxipedia.org/index.php/Main_Page

Please see guidance information on these pages above, and feel free to 
contact me about your interests in getting involved through one of these 
social networking tools:
http://www.facebook.com/barry.hardy3
http://www.linkedin.com/in/barryhardy
http://twitter.com/barryhardy
http://friendfeed.com/barryhardy
http://barryhardy.blogs.com/

best regards
Barry

Barry Hardy PhD
Director, Community of Practice & Research Activities
and OpenTox Project Coordinator (www.opentox.org)
Douglas Connect, Switzerland