Fig. 2From: A simple and inexpensive method for practical storage of field-sample proteins for subsequent MALDI-TOF MS analysisMALDI-TOF MS spectral comparisons for duplicate leaf samples of Fallopia japonica, dried onto filter paper, stored in 70% (v/v) ethanol, and untreated, between samples processed immediately and samples processed immediately and after storage for 3, 8, 14, 21, 30, and 36 days at 20 °CBack to article page