Okay then we can list them by name, since they are not one and the same:
CAV-Freitas inside mitochondriae
XMRV-silverman gammaretrovirus in white blood cells
JHK-Grossman retrovirus inside HHV-6A
(HHV-6A can be inside the brain , without any signs in blood or lumbar puncture..)
XMR-Grossman is this the JHK virus? or yet another one?http://forums.aboutmecfs.org/showpost.php?p=17011&postcount=95
Nearly all ME/CFIDS patients have a virus called HHV-6A and inside that is a retrovirus that Dr. Sidney Grossberg has named the JHK virus.
Just to be clear, Dr. Grossman did not find what he calls the JHK retrovirus in CFS patients. He found it in a human cell line used for research. CFS patients had antibodies which reacted to JHK. Since JHK is 96% genetically identical to XMRV, it's not surprising that a CFS patient infected with XMRV would have cross-reactive antibodies to JHK.
The existence of JHK has been confirmed, it's just never been found in a person, so it couldn't (yet) be classified as an infectious human retrovirus.
Grossberg found something
"2003: Raisch Kevin P; Pizzato Massimo; Sun Hai Yuan; Takeuchi Yasuhiro; Cashdollar L William; Grossberg Sidney E
Molecular cloning, complete sequence, and biological characterization of a xenotropic murine leukemia virus constitutively released from the human B-lymphoblastoid cell line DG-75.