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(A) Alignment of the predicted amino acid sequences of the cyp51A and cyp51B gene fragments from A. fumigatus, A. flavus, A. nidulans, and A. terreus. Amino acid residues identical in the eight gene fragments are boxed. (B) Phylogenetic tree obtained by CLUSTAL analysis. The length of each branch represents the distance between sequence pairs. Numbers at the bottom of the tree are numbers of substitution events.
