MZB1 and COVID-19: For the COVID-19 dataset, StablL identified features that echoed key pathobiological mechanisms of the host’s inflammatory response, such as CCL20, a known element of the COVID-19 cytokine storm33,34; CRTAC1, a newly identified marker of lung function35–37; and MZB1, a protein associated with high neutralization antibody titers after COVID-19 infection (Fig. 4j)28.