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BETA-Lactamases (EC. 3.5.2.6) from strains of Gram-negative bacteria have been studied using analytical isoelectric focusing. This permits a visual comparison of the patterns of beta-lactamase bands produced by enzymes from different organisms. Purification of crude intracellular preparations is unnecessary and the technique is sufficiently sensitive to(More)
The antifeedant and anthelmintic activities of crude extracts of the shells of Anacardium occidentale were studied by comparing it's activity with the activity of Azadirachta indica A Juss (Kernel), a commercial standard. The test extracts of A. occidentale in petroleum ether, dichloromethane: methanol showed better activities compared to A. Indica. To(More)
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