Transduction of lymphoid and myeloid cells. Human lymphocytes (L), monocytes (M), and neutrophils (N) were enriched from the peripheral blood of sheep transplanted with transduced cells by light scattering and cell-surface antigen expression. DNA from these cells was analyzed for the presence of the human β-globin gene and the MFGs-LacZ and MFGs-nlsLacZ proviruses as in Figure 5.