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Shu ZY, Yan YJ, Yang JK, Xu L.Shu ZY, et al. Among authors: xu l.Biotechnol Lett. 2007 Dec;29(12):1875-9. doi: 10.1007/s10529-007-9470-y. Epub 2007 Jul 17.Biotechnol Lett. 2007.PMID: 17636383
Shu Z, Duan M, Yang J, Xu L, Yan Y.Shu Z, et al. Among authors: xu l.Biotechnol Prog. 2009 Mar-Apr;25(2):409-16. doi: 10.1002/btpr.147.Biotechnol Prog. 2009.PMID: 19248178
Xu L, Jiang X, Yang J, Liu Y, Yan Y.Xu L, et al.Biotechnol Lett. 2010 Feb;32(2):269-76. doi: 10.1007/s10529-009-0141-z. Epub 2009 Oct 17.Biotechnol Lett. 2010.PMID: 19841868
Zhang Z, Yang J, Xu L, Liu Y, Yan Y.Zhang Z, et al. Among authors: xu l.Wei Sheng Wu Xue Bao. 2010 Feb;50(2):228-35.Wei Sheng Wu Xue Bao. 2010.PMID: 20387466Chinese.