Table I.

Dextran sulfate sodium-induced ulcerative colitis scale.

Score	Body weight loss (%)	Stool characteristic	Hematochezia
0	0	Normal	(−)
1	1–5	In-between
2	5–10	Loose	Occult blood (+)
3	10–15	In-between
4	>15	Sparce	Gross blood (++)

Normal stool, shaped stools or in particles; loose stool, pasty or half-formed stool which is not adhesive to the anus; and sparce stool, watery stool which is adhesive to the anus. Occult blood was tested by the conventional benzidine method. (−), negative; (+), positive; (++), strongly positive.