1. Department of Chemical Engineering, New Mexico State University, P.O. Box 30001, MSC 3805, Las Cruces, New Mexico 88003, USA
2. Department of Biology, New Mexico State University, P.O. Box 30001, MSC 3805, Las Cruces, New Mexico 88003, USA
3. Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA