Sobernheim and Mundel (13) found that spores in soil were six to eight times more resistant to sterilization by moist heat than the same number of spores in a laboratory culture.

• Sobernheim和Mundel(13)发现污物中的孢子与实验室中培养的相同数目孢子相比，对湿热灭菌的耐受性高6至8倍。