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Design and laboratory testing of the Schistosoma haematobium egg capture cartridges. (A) Wireframe drawing of the cartridge. (B) Cartoon of the channel that captures eggs to be imaged inside the cartridge (not drawn to scale). (C) Manual counts of eggs captured in cartridges from titrated solutions of S. haematobium eggs in saline. The dotted line represents 21% of nominal egg concentrations. (D) Measured false-negative rate of sample preparation process (no eggs captured).
