Hopes for cancer vaccine after trials in mice showed it reduced tumours 80 per cent of the time Posted on March 4, 2023 By Charlielikes Researchers from the University of Pennsylvania and Sao Paulo tested three vaccines on mice in trials and found that each could reduce the size of tumours with a single dose. news Tags:‘after, ‘time, 80, cancer, cent, for, hopes, in, it, mice, news, of, per, reduced, showed, the, topnews, trending, trials, tumours, vaccine