blood CD25 cell count to CD4 cell count ratio 2011-11-03T02:33:14Z A calculated measurement in which number of T lymphocytes in a specified sample of blood expressing the surface CD25 antigen is divided by number of T lymphocytes in the same sample of blood expressing the surface CD4 antigen, and presented as a ratio, fraction, quotient or percentage. CD25(+) cell to CD4(+) cell ratio as percentage CD25+ cell to CD4+ cell ratio as percentage CMO:0000603 VT:0008397 clinical_measurement_ontology mshimoyama calculated blood CD4 cell count calculated blood CD25 cell count