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Jones AT, Keen JN, Roberts NB.Jones AT, et al. Among authors: keen jn.J Chromatogr. 1993 Aug 27;646(1):207-12. doi: 10.1016/s0021-9673(99)87022-8.J Chromatogr. 1993.PMID: 8408429
Navaratnam N, Findlay JB, Keen JN, Watkins WM.Navaratnam N, et al. Among authors: keen jn.Biochem J. 1990 Oct 1;271(1):93-8. doi: 10.1042/bj2710093.Biochem J. 1990.PMID: 2121135Free PMC article.
Smallwood M, Keen JN, Bowles DJ.Smallwood M, et al. Among authors: keen jn.Biochem J. 1990 Aug 15;270(1):157-61. doi: 10.1042/bj2700157.Biochem J. 1990.PMID: 2396974Free PMC article.