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a Foley, J., Ramankutty, N., Brauman, K., Cassidy, E., Gerber, J., Johnston, M., Mueller, N., O'Connell, C., Ray, D., West, P., Balzer, C., Bennett, E., Carpenter, S., Hill, J., Monfreda, C., Polasky, S., Rockstrm, J., Sheehan, J., Siebert, S., and Zaks, D.: Solutions for a Cultivated Planet, Nature, 478, 337342, 2011

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Research-grade peptides should have batch-specific Certificates of Analysis showing third-party HPLC purity testing and mass spectrometry molecular identity confirmation, plus peptide content verification confirming the actual peptide mass per vial

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Nature , 562(7728), 578-582