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作者从自然感染西蒙氏贾第虫（Ｇｉａｒｄｉａｓｉｍｏｎｉ）的金黄地鼠肠道内和粪便中分离、收集滋养体和包囊，分别经口感染大鼠、小鼠、豚鼠和兔子。结果表明兔子和脉鼠均不感染，大鼠、小鼠均不同程度地感染该虫，且４周龄大鼠比８周龄大鼠更易感（Ｐ＜０．０５），而在小鼠中成年鼠与老年鼠对西蒙氏贾第虫的敏感性没有差异（Ｐ＞０．０５）。滋养体在感染动物的肠道内主要分布于十二指肠前段，中前段和中段。同时观察到结肠和直肠内有包囊，这表明该虫在大鼠、小鼠体内完成了其生活史。作者还对感染前后的滋养体作了蛋白银和铁苏木精染色比较，二者在形态上完全相同。
The authors isolated and collected trophozoites and cysts from the gut and feces of golden hamsters naturally infected with Giardiasimoni and inoculated rats, mice, guinea pigs and rabbits respectively. The results showed that neither rabbits nor the gerbils infected, the rats and mice all infect the insects to different extents, and the 4-week-old rats were more susceptible than the 8-week-old rats (P <0.05), while in the mice The sensitivity of adult and old mice to Giardia lamblia was not different (P> 0.05). Trophozoites in the intestine of infected animals are mainly distributed in the anterior duodenum, anterior and middle segments. At the same time, cysts were observed in the colon and rectum, indicating that the insect has completed its life history in rats and mice. The authors also made a comparison of protein silver and iron hematoxylin on trophozoites before and after infection, both in exactly the same morphology.