PT - JOURNAL ARTICLE AU - G R Thompson AU - P C Trexler TI - Gastrointestinal structure and function in germ-free or gnotobiotic animals. AID - 10.1136/gut.12.3.230 DP - 1971 Mar 01 TA - Gut PG - 230--235 VI - 12 IP - 3 4099 - http://gut.bmj.com/content/12/3/230.short 4100 - http://gut.bmj.com/content/12/3/230.full SO - Gut1971 Mar 01; 12