ID50 Describes

Multiple Choice

ID50 describes

A) the number of cells or virions which will kill 50 individuals.
B) the number of cells or virions needed to establish an infection in 50 percent of exposed hosts.
C) the amount of toxin lethal to a 50- pound human or other animal.
D) the number of cells or virions which will kill 50% of exposed hosts.
E) the percentage of individuals which will develop an infection after exposure to 50 cells or virions.