Insect bioassay of transformed and wild type isogenic line. a, wild type isogenic line exposed to 2nd instar larvae (photograph was taken just after introduction of larvae); b, wild type isogenic line (photograph was taken after 72 hours); c, e and g are transformed events 5, 8 and 9 respectively (photographs were taken just after introduction of insects); d, f and h are transformed events 5, 8 and 9 respectively (photographs were taken after 72 hours).