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The study showed that the amounts of the total proteins and 53kDa protein in male accessory glands (AGs) of the firebug Pyrrhocoris apterus (L.) increased with age of the adult life. The 53kDa protein, the most abundant polypeptide detected in the secretion of the AGs, and some other smaller peptides were identified as glycoproteins. Changes in the amounts of the total proteins and 53kDa protein in...
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