Assertion: dopamine's role | /r/CapableOf | start with work
Facets:
value: in germ-free transgenic mice
type: LOCATION
Source sentences:
text: The role of the gut–brain axis and the gut flora in Parkinsons became a topic of study in the 2010s, starting with work in germ-free transgenic mice, in which fecal transplants from people with PD had worse outcomes.