Figure 4: Immunohistochemical analysis of hnRNPD in oral tissues. Paraffin-embedded sections of histologically normal mucosa, oral dysplasia and OSCC were stained using anti-hnRNPD polyclonal antibody as described in Material & Methods section. Panel represents (i) normal oral mucosa showing no hnRNPD immunostaining; (ii) Dysplasia section illustrating nuclear hnRNPD staining in epithelial cells; (iii) OSCC section illustrating nuclear hnRNPD staining in tumor cells; (iv) OSCC section illustrating nuclear (N) and cytoplasmic (C) hnRNPD staining in tumor cells; (v) Lung cancer tissue section showing nuclear hnRNPD immunostaining; (vi) OSCC section used as a negative control, showing no hnRNPD immunostaining in tumor cells; (i-v original magnification x 200).