Of note and as shown in figure S4, when we analyzed our transduced cells 5 days post-infection, the percentage of GFP+ along with the percentage of GFP+CD19+ cells was increased as compared to the 24 hrs post-infection time point arguing the stem cells would at least partly develop into the B cell lineage.Hypothetically, the lower frequency observed in our scenario could be due to the particular receptor used. The gene discussed is CD19; the disease is infection.