Fig 4. Reduced mucus secretion in the lungs of htMSC and/or LLLT treated animals.

COPD animals were submitted to therapeutic protocols as described in materials and methods. Further, all animals were euthanized, lungs were obtained and sections were stained by PAS (Periodic Acid Schiff) as described in methods. In A) representative graphs and B) photomicrographs of PAS stained sections. Data representative of two experiments. n = 5–8 animals per group. One-way ANOVA.