Fig. 1From: Evidence against a role for jaagsiekte sheep retrovirus in human lung cancerHistological analysis of lung tissue from three Sardinian sheep with OPA, from a mouse with JSRV Env-induced lung tumors, and from a representative Sardinian lung cancer patient. Histological staining, as described in “Methods”, was performed at the same time for all tissues shown. Scale bars are shown at the bottom of each panel Back to article page