Figure 2: Immunostaining of 14F7 Mab in urinary bladder tumors. A and C: Hematoxylin and eosin staining of grade I and grade III transitional cell carcinomas, respectively. Observe: a low expression of NeuGcGM3 (Brown color) in the grade I transitional cell carcinoma sample (B). By the contrary, high level of this ganglioside was detected in grade III tumor (D). Counterstaining with Mayer’s Hematoxylin (Blue color). White bar=100 m.