Expression of KAKpro:GUS in vascular tissues, root tips, pollen, ovaries, and seeds. A to C, Fifteen-day-old seedling. A, Observation with a stereomicroscope of a plantlet showing expression in vascular tissues. Bar = 200 mm. B and C, Observation with a light microscope of a root tip (B) and an emerging lateral root (C) with expression in meristems. Bars = 1 mm. D and E, Eight-week-old flowering plant. D, Maturing siliques showing expression in seeds. Bar = 1 mm. E, Fully developed flower showing expression in ovules and pollen grains. Bar = 100 mm.