Human cell numbers measured in the spleen of vaccinated HIS mice.

The data from the TT and HBsAg vaccination experiments are pooled. Values are expressed as a mean (± S.E.M.) number of human cells, human B cells and human T cells found in control (PBS-injected) or vaccinated animals. The vaccinated animals were further distributed between responder and non-responder animals, as determined by antigen-specific ELISA. Statistical analysis was performed on the cell numbers harvested from vaccinated animals, as compared to the control group (* p<0.05; ** p<0.01).