U V W X Y Z

• Ulocladium
  Aw 0.89. This mold is reported to be a major allergen, capable of causing hay fever and asthma. It is...
• Verticillium
  Conidia dimensions: 2.3-10 x 1-2.6 microns. Found in decaying vegetation, on straw, soil and arthropods. A rare cause of corneal...
• Wallemia
  Aw 0.75. Conidia dimensions: 2.5-3.5 microns. Found in sugary foods, salted meats, dairy products, textiles, soil, hay and fruits.
• Yeast
  Various yeasts are commonly identified on air samples. Some yeasts are reported to be allergenic. They may cause problems if...