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Overall schematic of the methods. Method A is the method proposed by Roume et al. [1]. Reagents with * are from the AllPrep DNA/RNA/Protein mini kit, ** from the RNase-Free DNase Set, and *** from the RNeasy MinElute cleanup kit. The round arrow indicates that centrifugation was applied at that step. Extracted analytes are indicated with purple circles. Abbreviations: CHCl3, chloroform; MeOH, methanol; H2O, water; EtOH, ethanol.
