The answer is Vaccination.
Acquired or adaptive immunity is the body's third line of defense. This is protection against specific types of pathogens. Acquired immunity may be either natural or artificial in nature. Both natural and artificial immunity have passive and active components. Active immunity results from an infection or an immunization, while passive immunity comes from naturally or artificially gaining antibodies.
Answer:
the fine transparent tubular sheath which envelops the fibres of skeletal muscles.
Answer:
A
Sound waves radiate outward from a central point.
Drugs leave the body through a process called metabolism. Much of the work of metabolism is done in the liver. A) True
