Table 1.

Patient data for samples used in cell experiments.

	Age (years) ± SD	Gender	Mean KL knee score (range)
RA synovial fluid	61.3 ± 7.2	2 females 1 male	3 (2-4)
OA synovial fluid	58.0 ± 4.4	2 females 1 male	3.3 (3-4)
RA serum	47.0 ± 5.2	2 females 1 male
Ctrl serum	28.7 ± 2.5	2 females 1 male

The mean age, gender, and Kellgren-Lawrence knee score of patients and controls at the time of sample acquisition. Range refers to the difference between the lowest and highest score.