... in the first days of the last instarnymph spreads into the oocyte cytoplasm (Fig. 5),albeit towards the mid-instar, concomitantly with asteady increase in BgVgR protein levels (Fig. 4), begins to ... vitellogenins are incorporated into the oocyte throughvitellogenin receptor (VgR)-mediated endocytosis. In this paper, we report the cloning of the VgR cDNA from Blattella germanica, as well as the first ... beginning ofsixth instar nymph, decline thereafter, remaining lowduring the first reproductive cycle in the adult stage,and recovering high relative values during the periodof ootheca transport...