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Daily body weight in grams for mouse pups exposed to room air (RA) ± NO or >95% O2 ± NO. The open circles represent the pups exposed to >95% O2 alone (n = 30); the closed triangles represent the pups exposed to >95% O2 + 10 ppm NO (n = 19); the open triangles represent the pups exposed to RA + 10 ppm NO (n = 17); and the closed circles represent pups exposed to RA (n = 61). * Different from 21% O2, p < 0.01
