Infrared absorption spectrum of an oriented film of deoxyribonucleic acid from Micrococcus lysodeikticus has been examined in its A and B forms. In the A form a weak band was observed at 807 cm−1, while in the B form this is absent and a broad and weak band appears at 832 cm−1.
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Nishimura et al. (1974) studied this question.
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