Isoelectric Focusing article 14 Animal 10 Support, Non-U.S. Gov't 10 isoelectric focusing 10 Kinetics 8 priority journal 8 Blotting, Western 6 Electrophoresis, Polyacrylamide Gel 6 Male 6 Rats 6 Trypanosoma cruzi 6 controlled study 6 nonhuman 6 rat 6 Animals 4 Cruzipain 4 Cysteine Endopeptidases 4 Electrophoresis, Gel, Two-Dimensional 4 Human 4 Hydrogen-Ion Concentration 4 Hydroxymethylbilane Synthase 4 Immunodiffusion 4 Isoenzymes 4 Molecular Weight 4 Recombinant Proteins 4 animal 4 chemistry 4 enzyme purification 4 enzymology 4