Parameters of pain-related behaviour and inflammation in animals injected with saline or whole blood once on day 0 (arrow). No differences were obvious for primary hyperalgesia (A), secondary hyperalgesia (B), weight bearing (C), guarding score (D) or joint swelling (E). Data are presented as means ± SEM. BL, baseline; SEM, standard error of the mean.
Boettger et al. Arthritis Research & Therapy 2013 15:R148 doi:10.1186/ar4331