Agent-based models have many applications in biology, primarily due to the characteristics of the modeling method.Agent-based modeling is a rule-based, computational modeling methodology that focuses on rules and interactions among the individual components or the agents of the system. Agent-based models have many applications in biology, primarily due to the characteristics of the modeling method.Agent-based modeling is a rule-based, computational modeling methodology that focuses on rules and interactions among the individual components or the agents of the system. Prion, an abnormal form of a normally harmless protein found in the brain that is responsible for a variety of fatal neurodegenerative diseases of animals, including humans, called transmissible spongiform encephalopathies. Oxidizing Agent Definition. Read More on This Topic. The U.S. public health system and primary healthcare providers must be prepared to address various biological agents, including pathogens that are rarely seen in the United States. Definition. The goal of this modeling method is to generate populations of the system components of interest and … The presence of an agent of disease can be either excessive or relative. An individual organism's fertility is a very basic example of a selecting factor. Definition noun, plural: pathogens An agent causing disease or illness to its host, such as an organism or infectious particle capable of producing a disease in another organism. Oxidation means the loss of electrons, the loss of a hydrogen atom, or the addition of an oxygen atom. A selection agent is a change in the environment that might pose risk to some species. biologic agent listen (BY-oh-LAH-jik AY-jent) A substance that is made from a living organism or its products and is used in the prevention, diagnosis, or treatment of cancer and other diseases. biological agent: 1 n any bacterium or virus or toxin that could be used in biological warfare Synonyms: biohazard Type of: agent an active and efficient cause; capable of producing a certain effect

In disease, a factor such as a microorganism, chemical substance, or a form of radiation, the presence or absence of which (as in deficiency diseases) results in disease or in more advanced form of disease. In addition to these living or replicating pathogens, toxins and biotoxins are also included among the bio-agents. 2. A selecting agent is any factor, environmental or otherwise, that affects fertility or mortality. Word origin: French, from oxider, to oxidize, from oxide, oxide. An oxidizing agent is a chemical substance which causes another chemical species to lose electrons.