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  Indian J Med Microbiol
 

Figure 6: Picrosirius red-stained moderate periodontitis gingival tissue section (Group B1) in × 40 magnification showing collagen fibers with a blended combination of thick and thin fibers. (a) Thick collagen fibers with yellowish–red birefringence, (b) thin fibers with greenish birefringence

Figure 6: Picrosirius red-stained moderate periodontitis gingival tissue section (Group B1) in × 40 magnification showing collagen fibers with a blended combination of thick and thin fibers. (a) Thick collagen fibers with yellowish–red birefringence, (b) thin fibers with greenish birefringence