Keywords T cells apoptosis immunology glycobiology glycosyltransferase sialic acid Abbreviations—The abbreviations used are ST6GAL1 (ST6 beta-galactosidase alpha-2,6-sialyltransferase 1) WT (wild type) -/- (homozygous knock out) SNA (Sambucus nigra lectin) ECL (Erythina cristagalli lectin) FMO (fluorescence minus one) FasR (Fas receptor) FasL (Fas ligand) TNFα (tumour necrosis factor alpha) TNFR1 (tumour necrosis factor receptor 1) TRAIL-R1 (TRAIL receptor 1) TRAIL (TNF-related...