Pathogen
A pathogen is an agent which causes disease [1], such as microorganisms like bacteria (for example, Salmonella) or fungi (such as the plant pathogen Aspergillis niger). References ===
A pathogen is an agent which causes disease [1], such as microorganisms like bacteria (for example, Salmonella) or fungi (such as the plant pathogen Aspergillis niger). References ===