A novel mass cytometry protocol optimized for immunophenotyping of low-frequency antigen-specific T cells.

"Conflict of interest For CS: Consultancy and research funding, Bencard Allergie and Thermo Fisher Scientific; Research Funding, Mead Johnson Nutrition MJN."

"The author(s) declare financial support was received for the research, authorship, and/or publication of this article. CS is supported by the Universities Giessen and Marburg Lung Center (UGMLC), the German Center for Lung Research (DZL), University Hospital Giessen and Marburg (UKGM) research funding according to article 2, section 3 cooperation agreement, and the Deutsche Forschungsgemeinschaft (DFG)- funded SFB 1021 (C04, Project number: 197785619), KFO 309 (P10, Project number: 284237345), and SK 317/1-1 (Project number 428518790) as well as by the Foundation for Pathobiochemistry and Molecular Diagnostics."