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Mahmoud AA, Ahmed AA, Al-Shihry SS, Spring O.Mahmoud AA, et al. Among authors: spring o.Nat Prod Res. 2005 Sep;19(6):585-9. doi: 10.1080/14786410412331272031.Nat Prod Res. 2005.PMID: 16010824
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Frey M, Klaiber I, Conrad J, Spring O.Frey M, et al. Among authors: spring o.Phytochemistry. 2020 Sep;177:112430. doi: 10.1016/j.phytochem.2020.112430. Epub 2020 Jun 6.Phytochemistry. 2020.PMID: 32516579
Spring O, Pfannstiel J, Klaiber I, Conrad J, Beifuß U, Apel L, Aschenbrenner AK, Zipper R.Spring O, et al.Phytochemistry. 2015 Nov;119:83-9. doi: 10.1016/j.phytochem.2015.09.007. Epub 2015 Sep 24.Phytochemistry. 2015.PMID: 26412774
Aschenbrenner AK, Kwon M, Conrad J, Ro DK, Spring O.Aschenbrenner AK, et al. Among authors: spring o.Phytochemistry. 2016 Apr;124:29-37. doi: 10.1016/j.phytochem.2016.01.009. Epub 2016 Feb 12.Phytochemistry. 2016.PMID: 26880289
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Amrehn E, Aschenbrenner AK, Heller A, Spring O.Amrehn E, et al. Among authors: spring o.Protoplasma. 2016 Mar;253(2):447-55. doi: 10.1007/s00709-015-0823-4. Epub 2015 May 9.Protoplasma. 2016.PMID: 25956500