Table 1.

The evaluation standard of mice condition.

Index/score	1	2	3	4
Body odor	Odor-free	Mild odor	Medium odor	Severe odor
Mental status	Stable	Irritable	Fatigue	Somnolence
Chill and fever	Normal	Cowered	Chill	Arched back and trembling
Respiration	Normal	Panting	Tachypnea	Faint
Fur	Gloss	Matted	Fluffy and erect	Brown and erect
Appetite	Normal	Reduced to 50%	Reduced to 25%	Not at all