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Heyland J, Wiegandt K, Goepfert C, Nagel-Heyer S, Ilinich E, Schumacher U, Pörtner R.Heyland J, et al.Biotechnol Lett. 2006 Oct;28(20):1641-8. doi: 10.1007/s10529-006-9144-1. Epub 2006 Aug 11.Biotechnol Lett. 2006.PMID: 16902847