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Fig. 6. Hansson's histochemical stain of isolated adult female mosquito midguts.
Histochemistry indicates that the enzyme is localized in the midgut of all the
species with various degrees of darkening. The enzyme also appears to be
associated preferentially with the posterior midgut (black arrows) in several
of these species when compared to the anterior midgut (red arrows). (A)
Cx. nigripalpus, (B) An. quadrimaculatus, (C) Ae.
albopictus, (D) Cx. quinquefasciatus, (E) Ae. aegypti,
(F) Oc. taeniorhynchus. Scale bars, 500 µm.