Previous Article Next Article Table of Contents Biotechnology Letters, Vol.40, No.7, 1157-1157, 2018 DOI10.1007/s10529-018-2558-8 Export Citation Measurement of the N-15/N-14 ratio of phenylalanine in fermentation matrix by isotope ratio mass spectrometry (vol 39, pg 1853, 2017) Zhang SW, Zhong QD, Wang DB, Huang ZB, Li GH Please enable JavaScript to view the comments powered by Disqus.