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Effect of chamomile on iNOS expression in RAW 264.7 macrophages. (A) Western blot for iNOS protein expression, and (B) mRNA expression of iNOS in RAW 264.7 macrophages stimulated with 1 μg/mL LPS and LPS and chamomile as indicated. Graph represents protein and mRNA levels of iNOS corrected to the corresponding controls. L-NMMA, a non-selective inhibitor of all NOS isoforms was used as positive control. Details are described in ‘Materials and methods’ section.
