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Long-lived spin States for low-field hyperpolarized gas MRI.
Kovtunov KV, Truong ML, Barskiy DA, Koptyug IV, Coffey AM, Waddell KW, Chekmenev EY. Kovtunov KV, et al. Chemistry. 2014 Nov 3;20(45):14629-32. doi: 10.1002/chem.201405063. Epub 2014 Sep 26. Chemistry. 2014. PMID: 25263795 Free PMC article.