Figure 3From: Accumulation of phenanthrene by roots of intact wheat (Triticum acstivnmL.) seedlings: passive or active uptake?Concentration-dependent uptake of phenanthrene at 25 and 4°C in intact wheat roots. Phenanthrene concentrations in Hoagland nutrient solutions (pH 5.5) ranged from 0 to 6.74 μM. Data points represent mean and SD values of triplicates. Error bars do not extend outside all data points. fr wt, Fresh weight.Back to article page