 The study found that increased circulating T. follicular helper 17, TfH17, cell and programmed death, one positive, PD1+, TfH percentages are associated with higher auto-antibody levels in Hashimoto's thyroiditis patients, suggesting a potential pathogenic role for these cells in the development of the condition. This article was authored by Duwei Zhao, Yin Xie Chen, Qing Zhao, and others.