<span>Normal microbiota can become opportunistic pathogens if conditions overweigh the immune system, there are changes in the balance of the microbiota, a member of microbiota starts living in the part of the body where they don't normally live. </span>
Diffusion -SKx is your answer. Hope this helps! ;D
It was designed to perform low polar orbit investigation in the moon. The mission ended on July 31, 1999, after scientists deliberately aimed Lunar Prospector to crash into a permanently shadowed area of a crater near the lunar South Pole.