PDCD1 and opsoclonus-myoclonus syndrome: The frequencies of effector memory (Figure 1C), activated (Figure 1F), and Tscm (Figure 1G) CD8+ T cells were significantly increased in OMS subjects, but no significant differences in CD8+ naive T cells (Figure 1B), central memory T cells (Figure 1D), TEMRA (Figure 1E), senescence T cells (Figure 1H), and PD-1+CD57+ (Figure 1I) cells were found between controls and OMS subjects.