Fig. 12
From: Chromium (VI) – induced stress response in the plant Plantago ovata Forsk in vitro
Percentage of DPPH radical scavenging activity in 10 day-old P. ovata with Cr (VI) stress, where, 100% DPPH radical scavenging activity refers to inhibition of all the free radicals by the sample. The data are represented as mean ± standard error of mean (SEM) (n = 5). Asterisks denote the level of significance; *p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001