[1] and,Department of Pathology
[2] University of Alabama at Birmingham,Department of Microbiology
[3] 845 19th Street South,undefined
[4] Birmingham,undefined
[5] Alabama 35294,undefined
[6] USA,undefined
[7] Present address: Department of Cell Biology,undefined
[8] University of Alabama at Birmingham,undefined
[9] 845 19th Street South,undefined
[10] Birmingham,undefined
[11] Alabama 35294,undefined
[12] USA.,undefined