Table 2.

Rat arthritic index

Score	Symptom
0	There was no swelling and erythema evidence on the joint, including the small joints of the front foot and phalangeal joint, large joints including wrist and ankle.
1	There was mild swelling and erythema on ankle.
2	Mild swelling and erythema extended to small joint.
3	There was serious swelling and erythema on large joint.
4	Serious swelling and erythema encompassing on small and large joint.