Figure 1From: Twist and snai1 expression in pharyngeal squamous cell carcinoma stroma is related to cancer progression Expression of TWIST and SNAI1 nuclear transcription factors in pharyngeal squamous cell carcinoma. Positive (A) and negative (B) epithelial TWIST immunostaining in squamous epithelial cells (immunoscores 3/5 and 0/5, respectively). Positive stromal TWIST staining in stromal spindled cells (C; immunoscore 4/5). Positive SNAI1 immunostaining in the spindled stromal cells (D; immunoscore > 30 cells). Tumors A and D are moderately differentiated (grade 2/3) and tumours B and C poorly differentiated (grade 3/3). The stages are IV (A), II (B), IV (C) and IV (D). (Original magnifications of x100 in low power views and × 400 in the inserts).Back to article page