There are thousands of living organisms in this world ranging from things such as bacteria, viruses, humans, animals, plants, parasites, etc. These include living organisms that are referred to as fungus. They are eukaryotic organisms which contain yeasts and molds and mushrooms. Among Fungi, the ones that cause most concern to us as humans are the ones that cause infections and the one that we will focus on for this particular paper is Aspergillus fumigatus which we will continue to refer to as A. fumigatus from this point on. .
A. fumigatus can be found worldwide. It is the most common of the Aspergillus species and is considered an airborne saprophytic fungus which means that it lives on dead or decaying organic matter. Because of this, it naturally lives in the soil and is a common mold found among compost and plant surfaces. In those settings it plays an important function in the recycling of carbon and nitrogen from deceased organisms. Its conidia can be taken up with the wind and float through the air. It is estimated that there are approximately ten conidia found within every cubic meter of air (1). Conidia are asexual non-motile spores of a fungus. Due to their small size of 2 "3 μm in diameter (2), the conidia of A. fumigatus are easily able to reach the alveoli of the lungs. When grown on agar plates they can manifest themselves as light green/white in color. A. fumigatus grows extremely fast and can survive temperatures up to and beyond 70 degrees Celsius, especially in compost heaps. It grows well at temperatures up to 50 Degrees Celsius and therefore survives well in the human body. Microscopic morphology of Aspergillus fumigatus is typically composed of columnar, uniseriate conidial heads. Conidiophores are short, smooth-walled and have conical shaped terminal vesicles, which support a single row of phialides on the upper two thirds of the vesicle (3). The cell wall of A.
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