https://www.researchpad.co/tools/openurl?pubtype=&doi=10.1371/journal.pcbi.1008987&title=Targeted modification of the <i>Per2</i> clock gene alters circadian function in <i>mPer2</i><sup><i>luciferase</i></sup> (<i>mPer2</i><sup><i>Luc</i></sup>) mice&author=&keyword=&subject=