Fig. 2From: Topological control of nitric oxide secretion by tantalum oxide nanodot arraysSize and time dependent profiles of NO secretion. 100 and 200 nm stimulated more NO secretion on day 1, 3. However, 10, 50 nm stimulated more NO secretion only for day 5. Lipopolysaccharide and Rapamycin are positive and negative control groups. *shows p < 0.05 and **indicates p < 0.01Back to article page