Fast oxidation of α‐melanocyte‐stimulating hormone and derived peptides under laboratory conditions causes irreproducible results—Insights from studies of prolylcarboxypeptidase in human cell types. (25th December 2019) - Bayer, Malte; Tsiskarishvili, Nino; Stegemann, Agatha; Böhm, Markus; König, Simone