Galactomannan is a component of the cell wall of the mold Aspergillus and is released during growth. Detection of galactomannan in blood is used to diagnose invasive aspergillosis infections in humans.
most common species: A. fumigatus, A. flavus, A. niger, and the amphotericin-resistant A. terreus.
Aspergillus produces disease after inhalation of airborne spores (90%) and only occasionally by traumatic skin inoculation. Of all the fungi, Aspergillus is notable for the diverse settings in which it can occur and the various clinical manifestations it can produce.