Final answer:
Mycotoxins, such as aflatoxin, are virulence factors produced by the fungus Aspergillus. These toxins can enter the body through contaminated food or by inhalation, leading to various health issues including chronic pulmonary disease and liver cancer. option c is correct.
Step-by-step explanation:
The mycotoxin aflatoxin is a virulence factor produced by the fungus Aspergillus, an opportunistic pathogen that can enter the body via contaminated food or by inhalation. Inhalation of the fungus can lead to the chronic pulmonary disease aspergillosis, characterized by fever, bloody sputum, and/or asthma.
Aflatoxin acts in the host as both a mutagen (a substance that causes mutations in DNA) and a carcinogen (a substance involved in causing cancer), and has been associated with the development of liver cancer. Aflatoxin has also been shown to cross the blood-placental barrier.
A second mycotoxin produced by Aspergillus is gliotoxin. This toxin promotes virulence by inducing host cells to self-destruct and by evading the host's immune response by inhibiting the function of phagocytic cells as well as the pro-inflammatory response.