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Photographic gallery.  Thousands of particles under the microscope.

Ventilation System Glass Fiber, Mercerized Cotton, Cosmetics

Transmitted Brightfield Illumination

The red mercerized cotton fiber is from clothing. The glass fiber running diagonally across the field is
coated with impacted particles from the ventilation system. The colorful particle in the middle of the
Field of view is a flake from cosmetics.