This natural immunity showed scientists where and how to look for an effective vaccine.
If a person keeps his body in good physical condition and lives carefully, he will do much toward acquiring this natural immunity.
They were at a loss to know whether he had been scalped in battle, or enjoyed a natural immunity from that belligerent infliction.
By natural immunity is meant an inherited characteristic by which all individuals of a species are immune to a certain disease.
There is, however, a natural immunity which is due to long-continued environment or to protracted heredity.
In natural immunity, it plays the principal part by digesting morbid agents inside the phagocytes like any other food.
Our closest imitation of natural immunity is vaccination against small-pox.
The natural immunity of certain species of animals to the diseases of other animals is well known.
These people have lived Mars-normal so long their natural immunity has been destroyed.
natural immunity seems to be in the constitution of a person, and may be inherited.
natural immunity n.
See innate immunity.