CD34 and disease arising from reactivation of latent virus: Importantly, although the Kasumi-3 myeloblastic cell lines appear to show some differences with respect to primary CD34+ cells in the establishment of latent infection with the AD169 laboratory isolate of HCMV, they fully support latent infection with clinical isolates of HCMV and are equivalent to primary CD34+ cells in this respect (Albright & Kalejta, 2013).