Fig. 3From: A Novel Mechanism Underlying Multi-walled Carbon Nanotube-Triggered Tomato Lateral Root Formation: the Involvement of Nitric OxideDistribution of MWCNTs in tomato roots. TEM images of 3-day-old tomato seedlings treated with distilled water (Con; a) or 5 mg/mL MWCNTs (b) for 1 day were taken. Red arrow indicates cell wall, while white arrow indicates MWCNTsBack to article page