Samples of seed, stem, woody, and proteinaceous tissue were examined by FT-IR microspectroscopy. Methods of mounting samples for examination are described. Either they were immersed in D2O, embedded in either paraffin wax, epoxy, or vinylidene chloride-acrylonitrile copolymer, or they were examined without an embedding matrix.
Thomas P. Abbott, Frederick C. Felker, and Robert Kleiman, "FT-IR Microspectroscopy: Sample Preparation and Analysis of Biopolymers," Appl. Spectrosc. 47, 180-189 (1993)