Key wordshomocysteine, tetrahydrofolate, synthase, methionine, vortex, cystathione, methylenetetrahydrofolate, reductase, activity, adenosylmethionine, cobalamin, methyltransferase, adenosylhomocysteine, news, plot, plasma, homoserine, control, when, betaine, analysis, cystathionine, positive, shows, specimens, methylation, mobile, enzymes, cysteine, min, serine, flowrate, indicator, employing, describe, reactions, without, acknowledgement, involved, accordance, phase, beta, preparation, analytical, protocol, sample, probe, dependent, drying, limitation