Figure 3From: Lung tumor promotion by chromium-containing welding particulate matter in a mouse model Gross images of lung tumors promoted by GMA-SS welding PM 30 weeks after initiation with MCA. Panel A represents the lung tumor morphology before fixation panel B is 24 h after fixation. Asterisks (*)-indicate areas of welding PM deposition. The arrows (↑)-indicate lung tumors. The majority of tumors were ~1 mm in diameter.Back to article page