Highly Repeatable Tissue Proteomics for Kidney Transplant Pathology: Technical and Biological Validation of Protein Analysis Using Liquid Chromatography-Tandem Mass Spectrometry/Mass Spectrometry (LC-MS/MS). - Hofstraat-Boersma R; Marx K; Blatnik R; Claessen N; Chojnacka A; Peters-Sengers H; Florquin S; Kers J; Corthals G (Laboratory investigation; a journal of technical methods and pathology, 2026)