They are mobile scavengers that serve to engulf foreign particles in the lungs, such as dust, bacteria, carbon particles, and blood cells from injuries.
22.
Defects such as foreign particles will often occur near or at the origin of the critical crack, and can be readily identified by ESEM.
23.
A "'cough "'is a sudden and often repetitively occurring reflex which helps to clear the large breathing passages from fluids, irritants, foreign particles and microbes.
24.
Peyer's patches thus act for the gastrointestinal system much as the tonsils act for the respiratory system, trapping foreign particles, surveilling them, and destroying them.
25.
The gutta then used for balls was often dirty gray, full of foreign particles and none too easy to find on the imperfect fairways of that day.
26.
Then Alvaro, the half-breed Inca royal, came bounding in, in the person of Jose Cura, looking like a million bucks, and choked on some airborne foreign particle.
27.
Evaporated atoms that collide with foreign particles may react with them; for instance, if aluminium is deposited in the presence of oxygen, it will form aluminium oxide.
28.
Other than irritating foreign particles, allergies or possible illness, another stimulus is sudden exposure to bright light a condition known as photic sneeze reflex ( PSR ).
29.
In most cases it is caused by chronic, uncontrolled activation of the complement system, a branch of the body s immune system that destroys and removes foreign particles.
30.
While normal human growth and healing processes will remove small foreign particles from the skin, tattoo pigment particles are permanent because they are too big to be removed.
