人类是否可以像实验中的小白鼠一样将体内来自路氏乳杆菌的色氨酸副产物诱导细胞发育，目前尚未可知，但在炎症性肠病患者中发现与色氨酸有关的基因缺陷。
It is not known whether tryptophan byproducts from L. reuteri induce the cells to develop in people as they do in mice, but defects in genes related to tryptophan have been found in people with inflammatory bowel disease.