Arising in the mucous membranes, these white patches on the tongue, gums, cheeks, or elsewhere inside the mouth have the potential to develop into squamous cell carcinoma. They may be caused by sources of chronic irritation, such as habitual alcohol consumption or tobacco use, or rough edges on teeth or dentures.
Virus infection in vertebrates results in two general types of immune response. The first is a rapid-onset innate response against the virus, which involves the synthesis of proteins called interferons and the stimulation of natural killer lymphocytes.
Innate immunity is not pathogen-specific and does not create immunological memory. It includes the actions of adhesion molecules; cellular chemotaxis; the secretion of cytokines; cytotoxicity; the activities of dendritic and natural killer cells; inflammation; and phagocytosis.Synonym: innate immune system.rtificial immunity acquired (active or passive) immunity produced by deliberate exposure to an antigen, as in vaccination. cell-mediated immunity (CMI), cellular immunity acquired immunity in which the role of T lymphocytes is predominant. genetic immunity innate i.