Human Endogenous Retrovirus W Activity in Cartilage of Osteoarthritis Patients
Retrovirus-like particles in cartilage of OA patients. Transmission EM (a, b, and d) and negative staining EM (c) were used to monitor the presence of virus-like particles in cartilage samples from OA patients. Negative staining EM was performed on collagenase-treated cartilage, and the resulting subcellular bodies were absorbed into grids. (d) Immune-gold labeling of viruses with antibodies against envelope protein syncytin. The size bar is indicated.
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