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The enzyme activity varied with change in pH, and the maximum GST activity was observed at pH 6.5 (Figure 4B)

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These preliminary findings urge future in-depth studies on how to modulate Klotho expression through dietary interventions to improve DKD

Another study comparing concentrations found that 0.3% and 1% Retinol were similarly effective at remodeling photodamaged skin, but 0.3% caused fewer adverse reactions when used daily (a useful reminder that more isn't always better)