Postdoctoral positions are available to study the biology of Oxalobacter formigenes (Oxf). Lack of colonization with Oxf is a risk factor for recurrent calcium oxalate stone formation. The research is supported by the National Institutes of Health and involves work with both laboratory and gnotobiotic mice. The research will involve the use of several core facilities on the UAB campus. Fellows will normally have the opportunity to present their results at one national or international meeting each year. These positions offer careful mentoring to optimize skills in manuscript and grant preparation, knowledge acquisition and research techniques, and to enable the fellow to become a fully independent investigator. Candidates should have a PhD and/or MD degree and be able to provide evidence of their research capabilities and ability to be self-motivated. Prior experience in microbiology and molecular biology techniques would be an advantage.