Figure 1: Changes of body weight in SD rats after 4-hour inhalation of ethylene glycol. The groups of five male rats were exposed to ethylene glycol (0, 20, 100, 500 mg/m3) for 4 hours/day in acute inhalation toxicity. In acute inhalation toxicity, body weights were measured at the beginning of the study, 1st day, 3rd day and 7th day after exposure and the exposure termination day. Low: 20 mg/m3, middle: 100 mg/m3, high: 500 mg/m3.