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Occupational Lung Diseases – General ... - The Lung Center

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Size of particle<br />

mechanism of deposition<br />

site of deposition<br />

Large particles<br />

Sedimentation and<br />

Nose, trachea and<br />

(6 – 25 um) inertial impaction conducting airways<br />

Smaller particles<br />

(0.5 – 6um)<br />

Particles of < 1 um<br />

diffusion<br />

diffusion<br />

gas exchanging<br />

portions of lungs<br />

most of them<br />

exhaled out,<br />

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