When they treated mice with Mycobacterium accae they found that it did indeed actiate a particular group of brain neurons that produce serotonin - in the interfascicular part of the dorsal raphe nucleus (DRI) of the mice, to be precise.

• 在用牝牛分枝杆菌处理小鼠后，他们发现这种细菌确实能够刺激一类能产生5-羟色胺的特殊神经元，更准确的说是位于小鼠中缝背核束间。