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. 2013 Oct 1;13:245. doi: 10.1186/1472-6882-13-245

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Copyright © 2013 Perumalsamy et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Effect on morphostructural changes in test microorganisms. Scanning electron micrographs of two Gram-positives (A)Clostridium perfringens ATCC 13124 and (B)Staphylococcus aureus ATCC 12600 and a Gram-negative (C)Escherichia coli ATCC 11775 without or with treatment of the test compounds. White triangles indicate the morphological changes in cells of the test bacteria treated with corresponding compounds: A1, untreated, well divided and rod-shaped cells; A2, undivided, growth inhibited cells; A3, undivided, growth inhibited cells; A4, cell wall and cytoplasmic membrane disruption; A5, growth inhibited cells with cytoplasmic membrane disruption. B1, untreated, smooth and spherical shaped cells; B2, undeveloped cells with cytoplasmic membrane disruption; B3, cells with damaged cell membrane surface; B4, growth inhibited cells with membrane disruption; B5, undivided cells with collision. C1, untreated, well divided elongated cells; C2, wrinkled shaped cells; C3, growth inhibited cells; C4, growth inhibited cells with membrane disruption; C5; growth inhibited cells with collision.