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Photographic gallery.  Thousands of particles under the microscope.
Skin Flakes

Human and Dog Dander

The dog dander is easily seen in this tapelift from a home. The dog dander particles are the elongated bright particles. The human dander are the faint, isotropic, more equant, colorless particles in the background.

Transmitted Oblique Off Crossed Polarized Light Illumination


Significance in the Environment:

Characteristic Features:

Human dander varies from isotropic to particles with stress birefringence. The stress birefringence of human skin flakes tends to be low. The refractive index of human skin flakes tends to be around 1.550 but will vary with stress and oil content.

Associated Particles: