d) NPA-affected apical hook angle in dark-grown three-day-old Arabidopsis seedlings expressing Mab9B2 scFv fragments. (wild type sample sizes were between 38 and 50 plants; Mab9B2 sample sizes were between 33 and 45 plants). e) Gravitropic curvature in four-day old Arabidopsis seedlings expressing Mab9B2 scFv fragments. (wild type sample sizes were between 15 and 21 plants; Mab9B2 sample sizes were between 14 and 20 plants). 