antibodiesantigenbloodcarecellchallengescovcoviddetectiondiabetesdiagnosingdiagnosticdiseasedonationdonorensureenvironmenthealthhearthighkeylablaboratorieslaboratorylearningsmedicinemetricspartialpatientplasmarhrolesafetysarssepsissicklestrategiessystemtestingthyroidtransfusiontreatmenttypevaluewomen