Figure 5. The effects of pH values on Arabidopsis thaliana root tip clearing Proportion of plasmolytic cells and proportion of root tips with clear quiescent center (QC) cells of Arabidopsis thaliana seedlings cleared by HCG-1 (A) and HCG-2 (B) for 5 min under pH1.2/1.8, pH5.8, pH7.2, respectively. Different uppercase letters indicate extremely significant differences (P<0.01). Bars=50 μm