Blood from patients with HNSCC included in the clinical trial was collected. PBMC were purified by Ficoll-Paque PLUS centrifugation (Amersham Biosciences) and used fresh for cell isolation and ELISpot assay or stored frozen. DCs were generated as described previously (Lopez-Albaitero et al., 2009b (link)). CD14+ monocytes, NK cells, and CD8+ T cells were purified using EasySep kits (Stem cell technologies) and purity was more than 95% (Lopez-Albaitero et al., 2009a (link)).
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