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Phylogenetic analysis of putative chymotrypsin molecules from Litopenaeus vannamei (Lv), Culex quinquefasciatus (Cq), Anopheles gambiae (Ag), Aedes aegypti (Ae), Phlebotomus perniciosus (Pper), Lutzomyia longipalpis (Lulo) and Phlebotomus papatasi (Pp). GenBank accession numbers are given in parentheses and node support indicated by the bootstrap value.
