A debate is going on in Huntington’s research about whether the hallmark protein aggregates found in the brain of patients actually cause the disease. Now, a new “shortstop” may have found part of the answer. But this shortstop isn’t an infielder. It’s a new strain of mouse, one with a mutation expected to cause neurodegeneration — since it’s tailored to make large amounts of the above protein aggregates — only it doesn’t. Shortstop mice were recently created by Elizabeth Slow and colleagues at the University of British Columbia. And their unexpected ability to resist neurological damage is causing their creators…