Fig. 7From: Exposure to lead-free frangible firing emissions containing copper and ultrafine particulates leads to increased oxidative stress in firing range instructorsLung function measured by spirometry. Spirometry tests were administered pre- and post- shift for both control participants and instructors on the line at both WPAFB and JBC. A FVC, B FEV1. Data are represented as individual points with the bars representing mean ± SEMBack to article page