Effect of treatment with LLLT on leukocytes infiltration and mast cell activation after FA exposure.

Group of rats was exposed or not to FA inhalation (1%, 90 min/day, 3 days) and treated or not with LLLT (3J/cm2, 30mW, 60s/point, total 540s, 1 and 5h post each FA inhalation). After 24 h the lungs were removed and the morphological analyses were performed. Data of score: 0 absence; 1 weak presence; 2 Average presence; 3 intense presence; and 4 very intense presence. Data are expressed as mean ± SD.*P#P Effect of treatment with LLLT on leukocytes infiltration and mast cell activation after FA exposure.