Figure 4 (A-B): These two graph show the micrograph findings of the 4 different diseases under ×40 (Figure4-A) and ×100 times (Figure 4-B). No.1 = Early stage Nasopharyngeal Carcinoma, No.2 = nasopharyngeal lymphoma, No.3=nasopharyngeal tubercular, No.4 = nasopharyngitis. 4-A1: displays a micrograph of keratinizing undifferentiated type carcinoma. Numerous cancerous cells presented with keratin or “keratin pearls” under ×100 times micrograph was found out in figure 4-B1. 4-A2: and figure4-B2 shows a diffuse large B cells chronic lymphocytic leukemia/ small lymphocytic lymphoma. Under×100 times micrograph, as showed in figure 4-B2, higher cellular density, larger nucleio shape, and greater nuclear cytoplasm (N/C) ratio were found than NPC tissue (Figure 4-B1). 4-A3: shows a tuberculosis micrograph with a typical caseation granuloma in the middle field under ×40 times micrograph. The green arrows show Langhans giant cells in granuloma. 4-A4: show a nasopharyngitis pathology with moderate abundance lymphocytes infiltration. Its celluar shape and N/C ratio are normal, as showed in figure4-B4.