someone who causes the death of a person or animal

the causal agent resulting in death

a difficulty that is hard to deal with

predatory black-and-white toothed whale with large dorsal fin; common in cold seas

an investment banker who devises strategies to make a target company less attractive for takeover

a strain of bees that originated in Brazil in the 1950s as a cross between an aggressive African bee and a honeybee; retains most of the traits of the African bee; now spread as far north as Texas

T cell with CD8 receptor that recognizes antigens on the surface of a virus-infected cell and binds to the infected cell and kill it

T cell with CD8 receptor that recognizes antigens on the surface of a virus-infected cell and binds to the infected cell and kill it

predatory black-and-white toothed whale with large dorsal fin; common in cold seas