Aims: To assess potential alterations of the nasal mucosa by clinical and histopathological evaluation of workers exposed to sulphuric acid mists at anodising plants, correlating the findings with ...

CD4+ T cells bearing the Th17 markers CD161 and CCR6 increased by 0.40 and 0.45 log10 cells/nasal swab post-vaccination, but nasal T follicular helper (Tfh) cells were not increased.

A nasal spray does a much better job. That’s because sprays are aimed directly at the spot where many viruses first enter the body: the nose and the tissue that lines it, called the mucosa.