Fig. 2From: Endophytic establishment of native Bacillus thuringiensis strain in maize plants and its efficacy against Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)Transmission electron microscopy showing spore crystal morphology of Bacillus thuringiensis strain VKK5. B, bipyramidal; S, spherical; Sl, spindle O, ovoid; I, irregularly; T, trapezoid shaped; and Sp, sporeBack to article page