To evaluate the downstream effects of
increased miR - 155 expression in PD, Dr. Standaert's group administered AAV2 -
SYN or AAV2 - GFP (a green fluorescent protein - expressing control) into the SNpc of both C57BL / 6J (000664) and a miR -155-null mouse, B6.Cg - Mir155tm 1.1 Rsky / J (007745).