Figure 1.

Effect of sesquiterpene lactone fractions of different Artemisia species including A) Artemisia kopetdaghensis, Artemisia santolina, Artemisia sieberi, B) Artemisia biennis, Artemisia turanica, C) Artemisia fragrans, Artemisia absinthium, D) Artemisia ciniformis on LPS-stimulated J774A.1 macrophages production of NO. Cells were treated for a total of 24 hr with LPS alone or after an initial 2-hr treatment with the sesquiterpene fractions (10-100 μg/ml). Values shown are means (± SD) of at least three determinations. *P<0.05, **P<0.01 vs LPS alone