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collagen sandwich culture
A short course, plus good skin care, brings better results
Acknowledgements This study was supported by grants from the Tokyo Metropolitan Government and the Japan Agency for Medical Research and Development
Calculating 13 C-labelling enrichment in the detected metabolites The distribution of 13 C-labelling from arginine or proline in the identified metabolite pool was determined by calculating the ratio of 13 C to 12 C in the major mass fragments
Its molecular formula is C 14 H 22 N 4 O 9 , with a molecular weight of 390.34 g/mol (CAS 307297-39-8)
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