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Dragonflies; Hemolymph; Polyacrylamide gel electrophoresis


Acrylamide gel disc electrophoresis of the hemolymph of nymphs of the families Libellulidae and Aeschnidae showed a difference in the mobility of their protein components. Simultaneous comparisons of Anax iunius, Aeschna umbrosa, and Libellula pulchella gave clear separation of the species. Changes in protein composition associated with stage of nymphal development and transition from nymph to adult were apparent.

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