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Pictures of B. mori larvae, on the 11th day after hatching, reared on artificial diet overlaid with 100 mM sodium acetate, pH 5 (A, control) or 6 Utot/cm2 of 53D1 dissolved in the same buffer (B). All the control larvae are alive and the majority of them have reached the third instar (A); a few larvae treated with the chitinase are already dead, and the majority of the survived larvae are still in the second instar (B). Bars: 1 cm.
