Figure 1: Histopathological features of minor salivary gland biopsy tissue. Scale bar = 500 micrometers. There is mild to moderate atrophy of serous and mucous glands with marked infiltration of lymphocytes around the salivary duct. Two foci can be seen, each consisted of >50 lymphocytes within an area of 3 mm2. The foci were considered to be Greenspan’s grade 4.