Fig. 3.
Levels of human endogenous retrovirus (HERV)-K (HML-2) transcription in patient samples as determined by real-time polymerase chain reaction to the HERV-K (HML-2) gag1 gene. Rheumatoid arthritis (RA) patient (n = 34), osteoarthritis patient (OA) (n = 17), non-RA inflammatory controls – irritable bowel disease (IC) (n = 5) and normal healthy donors (NHD) (n = 5).