Bradley Peter J, Hsieh Christine L, Boothroyd John C
Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305-5124, USA.
Mol Biochem Parasitol. 2002 Nov-Dec;125(1-2):189-93. doi: 10.1016/s0166-6851(02)00162-7.