Stringer S L, Hudson K, Blase M A, Walzer P D, Cushion M T, Stringer J R
University of Cincinnati College of Medicine, Department of Microbiology and Molecular Genetics, OH 45267.
J Protozool. 1989 Jan-Feb;36(1):14S-16S. doi: 10.1111/j.1550-7408.1989.tb02670.x.