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.
YERVOY Â® (ipilimumab) is a prescription medicine used in adults to treat melanoma (a kind of skin cancer) that has spread (metastatic) or cannot be removed by surgery (unresectable). It is not known if YERVOY is safe and effective in children less than 18 years of age.