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.
Medical use. Nivolumab is used as a first line treatment for inoperable or metastatic melanoma in combination with ipilimumab if the cancer does not have a mutation in BRAF, and as a second-line treatment for inoperable or metastatic melanoma following treatment of ipilimumab and, if the cancer has a BRAF mutation, a BRAF inhibitor.
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.