Apologies if this has been covered before on the forum... I'm sure it has, but I can't find it. Does anyone know if it is thought that endogenous viruses can become reactivated, and active, under certain circumstances? I have just been reading the Phoenix Rising blog about Elaine DeFreitas' research, and how some people concluded that she had just found a 'benign' endogenous retro-virus. If it was the case that she just found an endogenous retro-virus, then what exactly would she have been detecting? Would it have been some virus DNA, or some virus protein particles? Could endogenous virus particles (DNA/protein particles) be toxic or inflammatory, thus causing a disease process such as ME? Could a disease, such as ME or HIV, reactivate dormant (usually benign) endogenous viruses, allowing their DNA to float around in the blood, or allowing whole viruses to be created? If so, then could reactivated endogenous retro-viruses be a symptom of ME, rather than a cause? Has anyone any thoughts about this?