older adults had sars cov-2 cross-reactive t lymphocytes directed to human coronaviruses oc43 and nl63
older adults had sars cov-2 cross-reactive t lymphocytes directed to human coronaviruses oc43 and nl63
second, we demonstrated that t cell memory lymphocytes to hcovs oc43 and nl63 were virtually absent in the group of older adults and that accordingly sars- cov-2 cross-reactive t cells were absent.", "one subject in the older adults group, who did not respond to stimulation with the hcovs nl63 and oc43, had a high frequency of t cells to the sars cov-2 m protein, (1000 sfc/106 pbmcs).")