Electron microscopy reveals the presence of viruses in mouse embryonic fibroblasts but neither in human embryonic fibroblasts nor in human mesenchymal cells used for hesc maintenance toward an implementation of microbiological quality assurance program in stem cell banks

1. Cobo, F.
2. Navarro, J.M.
3. Herrera, Ma.I.
4. Vivo, A.
5. Porcel, D.
6. Hernández, C.
7. Jurado, M.
8. García-Castro, J.
9. Menendez, P.