Example 79
Cells are cultured in the presence of a lentivirus encoding the exogenous transgene antibody scFv against hepatitis B surface antigen (HBsAg) (SEQ ID No. 1) such that the final cell product expresses >1×10^5 copies of antibody scFv receiver per cell as assessed by flow cytometry. To ensure that the receiver is functionally expressed, in vitro activity is assessed by flow cytometry. Briefly, cells are incubated with target protein HBsAg (Abcam) that is directly labeled with Dylight 650 fluorophore at a range of concentrations. Incubated cells are washed and analyzed by flow cytometry for presence of the fluorophore.