Fig. 5From: Phosphodiesterases in non-neoplastic appearing colonic mucosa from patients with colorectal neoplasiaImmunohistochemical staining of endoscopic biopsy. Staining for A, PDE3A; B, PDE4A; C, PDE3B; D, PDE4C; E, PDE4B; F, PDE4D; G, PDE5A. All images are acquired at objective magnification of 40xBack to article page