Figure 1
From: Fluorescent bioassays for toxic metals in milk and yoghurt
Fluorescence values arose from the ArsR-GFP associated with P ars − O ars after incubation with As (III)-added milk (A and B) and yoghurt (C and D) measured by fluororeader (A and C) and fluorometer (B and D). A solid line and two broken lines show mean ± SD of data obtained with milk or yoghurt without addition of As (III). Asterisk means statistical significance versus the milk or yoghurt without addition of As (III) (*P < 0.05, **P < 0.01, ***P < 0.001).