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  • Title: Changes taking place in the electrophoretic haemolymph protein pattern during metamorphosis of Polytela gloriosae (Lepidoptera).
    Author: Gupta US.
    Journal: Biochem Exp Biol; 1977; 13(4):417-24. PubMed ID: 16296173.
    Abstract:
    The haemolymph proteins of the larva, pupa and adult of Polytela gloriosae have been fractioned by Polyacrylamide gel disc electrophoresis. In the haemolymph of the fifth instar larval stage a total of ten protein fractions have been detected. The concentration of the protein fractions 2, 3, 4, 9 and 10 shows oscillations in their concentration in the early fifth instar, middle fifth instar and late fifth instar larval stage. In all 11 protein fractionswere detected in the haemolymph of different stages of the pupa. The protein bands 1, 7 and 10 of the pupa appear newly in the haemolymph as these bands were not found in the haemolymph of the larvae. The protein fraction 9 of larva was not found in the pupa. In the haemolymph of adult insect sexual difference was observed in the haemolymph protein pattern. In the haemolymph of adult female a total of 10 protein fractions were detected while from the male haemolymph a total of 8 protein fractions were detected. The pupal band 7 was not found in the adults of both the sexes. In the haemolymph of larva and adult one pigmented protein fraction was observed. No pigmented protein fraction was found in the haemolymph of pupa. Iron - containing protein fraction and the acid mucopolysaccharides were not found in the haemolymph. The protein fractions 3, 4, 5, 6 and 7 of adult haemolymph were darkly stained by the Schiff reagent and, thus, they are the fractions of glycoprotein. One protein fraction of lipoprotein was also found in the haemolymph.
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