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Growth of strain H17 in PDA with different Cu concentrations. (a) Copper concentrations tested for strain H17, a purplish pigment is produced as the Cu ppm increases, until no growth is achieved (1000 ppm). (b) A comparison between strain H17 grown in 100 ppm vs. growth in 300 ppm to stress the pigmentation in response to Cu. The picture was taken after 8 days of incubation at 28 °C.
