Figure 6. rKSHV.219 infected cells and viral DNA can be detected throughout the murine host.

(A) Graph depicts viral DNA copy number per 500 ng total DNA in 10×10⁶ cells purified from bone marrow and in 500 µl whole blood of tumor bearing mice. (B) rKSHV.219 infected cells were detected in murine lymph nodes. Cells from murine lymph nodes were dissociated into single cell suspensions and plated in chamber slides and fixed for fluorescence microscopy for GFP expression. The top panels depict IgG control antibody and native GFP expression, which is quite dim. GFP expression was enhanced with an antibody directed against GFP in the middle and bottom panels. (C) rKSHV.219 infected cells are present in murine spleen. Spleen from a tumor bearing mouse was excised, dissociated with collagenase IV and cultured in puromycin containing selective medium. GFP expressing LANA positive cells grew from the splenic cell culture.