Virulent pathogen

There is no evidence or reason to expect that irradiation produces more virulent pathogens among those that survive irradiation treatment [123,124]. 

Virmugens are pathogen genes that encode for virulence factors their mutation in virulent pathogens allows for the generation of effective live attenuated vaccines... 

Biotic. Enhanced resistance to disease which results from prior exposure to avirulent pathogens or nonpathogenic organisms or to virulent pathogens under conditions unfavorable for disease development, is the major focus of this paper and will be discussed at length. 

The specific, somatic polysaccharides of Smooth, Gram-negative bacteria have been studied extensively, but mostly from the biological point of view, because the Smooth forms are often virulent pathogens and it is by the specificity of the polysaccharide component that the organisms may frequently be most surely identified. 

Jr./ Evans, J. P./ Trask-Morrell, B./ Fulgham, F. E., USDA, ARS, New Orleans, LA, and Stoneville, MS, unpublished results). Therefore, invert emulsions could be both a successful delivery system and water source for A. cassiae. However, the lack of sufficient mortality at reasonable application rates indicates that the invert emulsion carrier needs other adjuvants or a more virulent pathogen strain for commercial success. 

Gram-positive spherical bacteria (cocci) arranged in clusters are staphylococci. Staphylococcus epidermidis is foimd normally on the skin and mucous membranes in high numbers. However, it can cause an infection if an opportunity such as a skin abrasion occms. Staphylococcus aureus is also found on the skin and mucous membranes but in lower numbers than S. epidermidis. It is a much more virulent pathogen and usually causes more serious disease. About half the ocular infections that occur are caused by staphylococci. 

Many drugs diffuse across the BBB or enter the brain via active transport More people take drugs to affect mental activities than to fight infection. Drugs can produce molecular diseases of the brain just as antibiotics can result in the growth of virulent pathogens. Such drugs can disturb brain chemistry, just as antibiotics can increase the number of... 

Use of monoclonal antibodies to detect and quantify specific pathogens, differences between virulent and non-virulent pathogens, and pathogen resistance to pesticides (fungicides), and to prevent disease by conferring passive immunity to an infectious agent. 

The crowding of individuals modifies this characteristic. Very virulent pathogens can spread from one individual to another if the second cannot escape the first. Thus, whereas natural selection... 

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