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An investigation was conducted on the chitinase isoenzymes in various tissues of 1-week-old sorghum seedlings that had been inoculated with the fungal pathogens Fusarium thapsinum and Fusarium proliferatum. Electrophoresis of non-denatured extracts on SDS-PAGE gels revealed at least 11 bands of activity. Using native PAGE gels, seven acidic isoenzymes and four basic isoenzymes were identified. Two...