Olson Merle E, O'Handley Ryan M, Ralston Brenda J, McAllister Timothy A, Thompson R C Andrew
Department of Microbiology and Infectious Diseases, University of Calgary, 3900 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada.
Trends Parasitol. 2004 Apr;20(4):185-91. doi: 10.1016/j.pt.2004.01.015.