Fig. 5
From: Signature of chronic hepatitis B virus infection in nails and hair
A, B Immunohistochemical staining of nail from a patient with chronic HBV mono-infection. Original magnification =  ×200. A HBsAg is stained brown. B The negative controls (mouse IgG1). C, D Immunohistochemical staining of fingernail from a patient with chronic HBV and HDV dual infections (no. HDV-14). Original magnification =  ×200. C HBsAg is stained brown. D Negative control (mouse IgG1). E, F Negative control. Immunohistochemical staining of fingernail from a serum HBsAg negative subject. Original magnification =  ×200