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Most clinical observations suggest visible changes emerge somewhere between four to twelve weeks, depending on the treatment goal skin texture improvements tend to show sooner than deeper structural changes like firmness or scarring support
That is still manageable but approaching the upper limit of what is practical
The extract was rotary evaporated at 30 C to a volume of 2 ml, acidified to pH 4 with formic acid, and 200 l aliquots were purified using preparative HPLC (Agilent Technologies, 1260 Infinity) over a Luna 5 m phenyl-hexyl 100 (250 10 mm) column and a 15 min linear gradient from 0% acetonitrile in H 2 O to 16% acetonitrile in H 2 O at 4 ml min 1 flow
thaliana vegetative tissues and seed testa, respectively (Kitamura et al., 2004)
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