Hershey–Chase experiment
... that before the Hershey–Chase experiment confirmed the role of DNA, scientists believed that genes were carried by proteins?
... that before the <b id="mwEW8"><a href="./Hershey–Chase_experiment" id="mwEXA" rel="mw:WikiLink" title="Hershey–Chase experiment">Hershey–Chase experiment</a></b> confirmed the role of <a href="./DNA" id="mwEXE" rel="mw:WikiLink" title="DNA">DNA</a>, scientists believed that <a href="./Gene" id="mwEXI" rel="mw:WikiLink" title="Gene">genes</a> were carried by <a href="./Protein" id="mwEXM" rel="mw:WikiLink" title="Protein">proteins</a>?