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Health and disease GapFill
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Health is classed by the World Health Organization (WHO) as the complete state of physical, and social well-being. Ill health or can be the result of many factors, including diet, stress and pathogens, and some can put a person at increased risk of developing another. For example, can put someone at increased risk of allergies or asthma.
Many diseases, i.e. those that are not directly transmittable to another individual, are complex, but the risk of them can be reduced by making changes to lifestyle. and drinking are two risk factors that increase the incidence of diseases of the cardiovascular system and liver, respectively.
If cardiovascular disease becomes a particular problem, patients may need to take medicines to reduce their , or blood vessels may need to be artificially held open with mesh called a . Of course, these solutions may have their own problems, such as unexpected side effects of drugs or the risk of surgery.
Scientists have been able to develop monoclonal antibodies, which are identical antibodies produced by cloning from a mouse after its immune response has been triggered artificially. These cells have the property of indefinite growth and division, allowing a large number of monoclonal antibodies to be produced from specific white blood cells called .
Because monoclonal antibodies bind to the surface of cells, they are useful and treatment tools in modern medicine. They can be made to bind to almost anything, providing it has the correct antigen attached. They are commonly used in pregnancy tests to detect the hormone hCG in the of a pregnant woman, or to detect specific diseases. Monoclonal antibodies may be bound to a fluorescent dye to enable researchers to locate specific cells or tissues, such as blood clots, and can even be bound to substance to target cancer cells whilst leaving normal body cells unharmed (unlike in standard drug and radiotherapy treatments). Unfortunately they do often have unexpected , which means their use is currently more limited than it was predicted to be.