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Evolution of SARS CoV-2 PCR and IgG antibodies.
Ct: cycle time. PCR: protein chain reaction. IgG: immunoglobulin G. SARS-CoV-2: severe acute respiratory syndrome coronavirus 2.
In this graphic it can be seen how viral load by PCR was persistently positive till CP infusion. Thereafter IgG were detectable and Ct, which is a parameter inversely proportional to viral load, began to decrease until PCR became negative (Ct ≥ 40).
