B. Flow cytometry of cells infected with the lentiCRISPR v2.0 library where the expression of GFP indicates latency reactivation. Target genes were enriched through two-round sorting. Continuously cultured C11 latent cells infected with the lentiCRISPRv2.0 served as control. Blue dots and the encircled area represent the GFP-positive cells for flow cytometry analysis. 