Figure 1

Time course of γδ T cell expansion after transplantation (Tx). γδ T cell frequencies among total lymphocytes are displayed in relation to virologic responses (A) and in relation to donor chimerism (B). Virologic responses were measured by pp65 antigen detection in the patient’s blood (pp65 positive per 400.000 leukocytes analysed). For determination of donor chimerism, microsatellite variable-number-of-tandem repeat of peripheral blood leukocytes was analyzed using standard techniques [11].