Fig. 4From: Nitric oxide increases biofilm formation in Saccharomyces cerevisiae by activating the transcriptional factor Mac1p and thereby regulating the transmembrane protein Ctr1Biofilms formed in 96-well plates measured after adding different concentrations of (a) copper (b) and iron. c Intracellular copper and iron contents in biofilm cells were detected. The values are the means and standard deviations of three independent experiments. ***p < 0.001, **p < 0.01, *p < 0.05 by Student’s t-testBack to article page