P4‐167: PROGENITOR CELL SENESCENCE IS LINKED TO NEUROVASCULAR DYSFUNCTION AND LOSS OF BRAIN NETWORK CONNECTIVITY. (1st July 2019) - Nation, Daniel A.; Han, Duke; Jang, Jung; Dutt, Shubir; Ho, Jean K.; Yew, Belinda; Tan, Alick; McIntosh, Elissa C.; Blanken, Anna E.; Gaubert, Aimee; Marshall, Anisa; Sible, Isabel J.; et al.