Investigated cytotoxicity (Neutral red uptake assay )of substance A on macrophage-differentiated THP-1 cells and aortic smooth muscle cells. A 24 h treatment by the substance A at doses of [10 M, 30 M, 100 M]. Also tested LPS [1g / ml] and TNF [50 ng / ml] toxicologist. Interpret / explain the graphs and discuss the results?

THP-1 macrophages Aortic smooth muscle cells B 300 300 200 - 200- % Cells viability % Cells viability 100 ulii 100 LPS LPS TNF-a TNF-a Control 10 UM 30 PM 100 PM Control 10 PM 30 M 100 PM