ocr: Quiet faith and fond memories comfort members of the Mankato convent at the wake of Sister Mary Bertha Nos- bush. "The community we have is a key to why our sisters do well as they get older," says Sister Rita Schwalbe, a spokeswoman for the aging study. "They have that moral support that gives them an extra push." - Subjects of the study take periodic tests. After death their brains offer addi- tional data on their mental capacity; the stained tissue below awaits microscopic. examination. "We' re seeing ev- idence that the chain of events leading to Alzheimer's goes way back to mid and early ...