Cat Dander

Cat dander tends to be more elongated than human skin flakes but not so much as dog dander. The particles are more like angular ellipsoids, elongated parallelograms, or elongated pentagrams. The particles tend to show irrigular patterns of stress birefingence with the birefingence being highest at one end of the particle.

Transmitted Off Crossed Polarized Light Illumination

Cat dander is common in homes with a pet cat but is also common in office and school environments from the clothing of cat owners.