Early in the pandemic, my team spotted something surprising. When people were severely ill with COVID-19 and on a ventilator, the daily rinses of the plastic tubes in their windpipes contained immune cells from the airway. More surprisingly, what was in these airway samples was very different from what was found in the same patient’s blood.
COVID has shown we must study immunity in the whole body — let’s sort the logistics to acquire the right samples.
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