Glossary of Mold Related Terms
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Select a letter:
UG/M3
Micrograms per cubic meter
UL
Underwriters' Laboratory
Ulocladium
A rapidly growing, dark brown or black fungus that is a potential allergen. Its spores are unusually large (1015 um). It is typically found in soil and is frequently encountered at low levels indoors.
UM
Micrometer
Upper Respiratory Tract
Structures that conduct air into the lungs, including the nasal cavity, mouth, pharynx, and larynx.

