CCR4 expression levels in human gastric cancer cells and non-cancerous gastric tissues.

<p>CCR4 was detected at different levels, including negative expression (-) (A), weak expression (+) (B), moderate expression (++) (C) and strong expression (+++) (D). The expression was negative in non-neoplastic cells (the right area in the image) adjacent to CCR4 positive gastric cancer cells (E), and weak expression of membrane CCR4 was found in gastric preneoplastic lesions (F). Magnification, ×400 (A-D, F), ×200 (E).