Establishing a Positive Control for CD4 Cells: A Vital Addition to the Research Toolkit

Measurement of CD4 T cell-mediated immunity requires functional tests to be conducted with viable peripheral blood mononuclear cells, PBMC. Recently, scientists at CTL successfully developed a positive control that not only verifies the functionality of CD4 T cells in PBMC, but also that the antigen-presenting cell compartment is unimpaired in the test sample as well.