Congratulations to Craig and Derek on Passing Their Oral Preliminary Exams! January 30, 2017January 30, 2017 in News. Congratulations to Craig and Derek on passing their Oral Preliminary Exams! Derek’s research is focused on the development of sustainable polymers and Craig’s research is focused on the incorporation of natural products into polymers for gene delivery applications. Share on Facebook Share Share on Google Plus Share Share on TwitterTweet Share on LinkedIn Share Send email Mail Recommended PostsJuly 1, 2013 Congrats to Mammad on passing his prelim!May 12, 2013 Congrats to Haley, Dustin, Will, She, James, and Jeff on passing their prelims!March 11, 2015 Congrats to Anatolii and Leon for passing their Oral Exam!