Production of MNP (A), LIP (B), and laccases (C) by strain 312 in different media. LN (2.4 mM N), HN (24 mM N), ME, and LN+IO media were used. The values shown are means of three replicates, and the standard deviation was less than 1%. In panel C, note the break in the y axis; the number shown above the tall bar is the actual laccase activity.