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Figure 7 | BMC Developmental Biology

Figure 7

From: Embryonic desiccation resistance in Aedes aegypti: presumptive role of the chitinized Serosal Cuticle

Figure 7

Chronology of Aedes aegypti eggshell layers formation. Schematic drawing of the structure of an embryo and egg covering (cross section). For the sake of simplicity the amnion is absent. Up to 8 HAE the embryo is surrounded by a composite external exochorion and an internal endochorion. At 9 HAE the cellular serosa develops around the embryo. Serosa secretes the serosal cuticle, which becomes localized between the serosa and the endochorion by 15 HAE.

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