Lewis's drawing of the embryo filariae in mosquito. Sketches from notebook, made by Lewis, just after he heard from Manson that the latter had seen the maturation of the embryos of the mosquito.

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Lewis's drawing of the embryo filariae in mosquito. Sketches from notebook, made by Lewis, just after he heard from Manson that the latter had seen the maturation of the embryos of the mosquito. Wellcome Collection. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.