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Phylogenetic tree of chitinases. The tree was constructed by the neighbor-joining method, and bootstrap values are indicated at the branches. Amino acid sequences of chitinases come from Cynanchum komarovii (GU067482), Carica papaya (GI:195927481), Solanum lycopersicum (AAB08443), Nicotiana tabacum (BAA33971), Musa acuminata (CAC81812), Solanum tuberosum (X67693), Oryza sativa (EAZ02416), Zea diploperennis (AAT40032), Medicago truncatula (AAR87869), and Picea abies (AAT09426).
