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CSLM images of induction of chitinase genes after 3 days of incubation of the T. atroviride nag1::gfp mutant (A) and after 4 days of incubation of the T. atroviride ech42::gfp mutant (B) upon contact with R. solani hyphae (yellow or reddish brown) in sterile soil. The arrows indicate T. atroviride hyphae. Both images were taken with a ×20 objective.
