In the case of other viruses and H. pylori, reactive oxygen species and nitrogen species produced by inflammatory cells can cause DNA damage, induce apoptosis, and regulate enzymatic activity and gene expression. However, in cervical cancer, HPV plays a role in the coding gene in tumor cell proliferation. In addition to stimulating cell proliferation, inactivation of tumor suppressor genes such as p53 may be a pathway leading to malignancies of HPV and hepatitis B virus. Helicobacter pylori has been shown to cause apoptosis in damaged epithelial cells.
Bacteria are often licked as a cause of diseases of humans and animals (eg leptospira causing severe illness in domestic animals). However, certain bacteria, actinomycetes produce antibiotics such as streptomycin and nocardine; others are symbiotic in animals (including humans) or elsewhere in the body, or in the roots of certain plants, Convert nitrogen to nitrogen. It is available in the form. Bacteria bring yogurt and sourdough together into yoghurt; bacteria help decompose dead organic matter; in many circumstances bacteria form the basis of the food web. Bacteria have great flexibility, the ability to grow and propagate quickly, and beyond the age of 50, the oldest fossils that are organic fossils like bacteria have such a meaning.
Microorganisms are the causative substances (pathogens) of many infectious diseases of humans and livestock. Pathogens cause diseases such as plague, tuberculosis, and anthrax. Protozoa cause diseases such as malaria, sleeping disorders, dysentery, toxoplasmosis and so on. Microscopic fungi cause diseases such as sputum, candidiasis and histoplasmosis. The causative virus causes diseases such as influenza, yellow fever and AIDS. Microorganisms such as bacteria, fungi and viruses are important as plant pathogens and cause disease in crops. Fungus causes serious crop diseases such as corn leaf rust, wheat rust, powdery mildew and other diseases. Bacteria cause plant diseases including spots and tree crowns. This virus causes plant diseases such as leaf mosaic. Phytophthora infestans causes potato blight and contributes to the great famine of Ireland in the 1840s