MFI	mean fluorescence intensity
ABC	antibodies bound per cell
mAb	monoclonal antibody
CD4	cluster of differentiation 4
CV%	coefficient of variation
FITC	fluorescein isothiocyanate
APC	Allophycocyanin
(AR)	number of mAbs CD4 receptor complexes on T cell
(ARR)	number of mAb two CD4 receptor complexes on T cell
(R)	number of unbound CD4 receptors on the T cell
PBMC	peripheral blood mononuclear cell
PBS	phosphate buffer saline
FBS	fetal bovine serum
SD	Standard deviation