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  Indian J Med Microbiol
 

Figure 7: Picrosirius red stained severe periodontitis gingival tissue section (Group B2) in × 40 magnification. (a) loosely packed collagen fibers with greenish birefringence

Figure 7: Picrosirius red stained severe periodontitis gingival tissue section (Group B2) in × 40 magnification. (a) loosely packed collagen fibers with greenish birefringence