id author title date pages extension mime words sentences flesch summary cache txt cord-348455-vcxalkeo Graham, N. R. Kinetics and Isotype Assessment of Antibodies Targeting the Spike Protein Receptor Binding Domain of SARS-CoV-2 In COVID-19 Patients as a function of Age and Biological Sex. 2020-07-22 .txt text/plain 4105 283 62 title: Kinetics and Isotype Assessment of Antibodies Targeting the Spike Protein Receptor Binding Domain of SARS-CoV-2 In COVID-19 Patients as a function of Age and Biological Sex. date: 2020-07-22 The receptor-binding domain of the CoV spike (RBD-S) protein is important in host cell recognition and infection and antibodies targeting this domain are often neutralizing. We first piloted our antigen preps for the RBD-S IgG screening assay using serum 81 samples from a PCR-confirmed severe COVID-19 patient (defined as admission to the Intensive 82 Care Unit, ICU) who was admitted to the hospital 10 days following symptom onset and based 83 on an early report suggesting that SARS-CoV-2 could trigger antibody responses in this 84 timeframe (24). Anti-S titers in patients with a negative RBD-S test were 138 generally low and in RBD-positive samples, followed the same trends as RBD-reactivity, 139 providing further confirmation of robust serological responses to SARS-CoV-2 during acute 140 COVID-19. ./cache/cord-348455-vcxalkeo.txt ./txt/cord-348455-vcxalkeo.txt