Hello,
If we want to evaluate an anti-inflammatory effect from a plant extract on macrophage cells J774, should we put it before or after stimulation with Lps/IFN. Usually we put the extract (100ul) with cells in 24 well plate for 4 hours, then we stimulate with Lps/IFN , then we dose the NO with Griess reagent after 24 hours.
We didn't got any significative results, because it change from an experience to another, even we keep same conditions.