Extinction _____. only happens above the species level cannot happen to more than one species at a time has happened to over 99% of species that ever lived on earth happens when a species or population dies out.
Nivolumab, marketed as Opdivo, is a medication used to treat cancer.
Lung Cancer Health Center. Tools & Resources. Opdivo Shows Promise Against Lung Cancer. Jan. 13, 2015 -- Drug-maker Bristol-Myers Squibb says a trial of nivolumab (Opdivo) has been stopped early because the drug improves how long people with a type of advanced lung cancer live compared to chemotherapy.