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 Indian J Med Microbiol  
 

Figure 4: (a) PAS stain showing negative expression for mucin in microcystic spaces (PAS, ×100). (b) IHC showing uniform immunoreactivity of Ki-67 (Ki-67, ×100), (c) CK18 diffusely positive in all the layers in AC (CK18, ×100), (d) and only in selective stellate reticulum cells in AB follicles (CK18, ×400)

Figure 4: (a) PAS stain showing negative expression for mucin in microcystic spaces (PAS, ×100). (b) IHC showing uniform immunoreactivity of Ki-67 (Ki-67, ×100), (c) CK18 diffusely positive in all the layers in AC (CK18, ×100), (d) and only in selective stellate reticulum cells in AB follicles (CK18, ×400)