Immunity
pathogen
lysosomes
Strange, unfamiliar, unknown, foreign, extraterrestrial, creature from outer space, space invader or Martian.
When one is sick, the body temperature increases to aid in fighting off the foreign invader.
Inflammation is a process which occurs when the immune system of the body responds to either an injury or a foreign invader (virus, bacteria, or fungi).
Napoleon was a famous invader.
no - invader snoflake
Invader Zim was from the planet Irk .
Astro Invader happened in 1980.
Lum Invader was created in 1978.
Invader - artist - was born in 1969.
Beam Invader was created in 1979.