The result showed that cells in KSHV-infected PDLSC implants co-expressed PDGFRA and PDPN, as well as Nestin and CD31, while mock-infected implants expressed very low levels of PDPN and CD31 (Fig 7E) The triple IFA results closely resemble those observed in KS lesions (Fig 1A) and suggest that KSHV-infected MSCs can be transformed into KS-like cells through MEndT. This evidence concerns the gene PECAM1 and Kaposi's sarcoma.