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A mix-up rated as contamination could in reality be a simple confusion of two cell lines, but usually contamination is assumed. [ citation needed ] After a cell line has been discovered to be contaminated, it is usually never used again for research demanding the specific type of cell line they were assumed to be.
Genetic pollution is a term for uncontrolled [1] [2] gene flow into wild populations. It is defined as "the dispersal of contaminated altered genes from genetically engineered organisms to natural organisms, esp. by cross-pollination", [3] but has come to be used in some broader ways.
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The internal air is forced out so that negative air pressure is created pulling air passively into the system from other inlets. Negative room pressure is an isolation technique used in hospitals and medical centers to prevent cross-contamination from room to room.
Within the sciences, the word "contamination" can take on a variety of subtle differences in meaning, whether the contaminant is a solid or a liquid, [3] as well as the variance of environment the contaminant is found to be in. [2] A contaminant may even be more abstract, as in the case of an unwanted energy source that may interfere with a process. [2]
Contamination control is the generic term for all activities aiming to control the existence, growth and proliferation of contamination in certain areas. Contamination control may refer to the atmosphere as well as to surfaces, to particulate matter as well as to microbes and to contamination prevention as well as to decontamination .
The term waterborne disease is reserved largely for infections that predominantly are transmitted through contact with or consumption of microbially polluted water.Many infections may be transmitted by microbes or parasites that accidentally, possibly as a result of exceptional circumstances, have entered the water.
Food contamination, the presence in food of harmful chemicals or microorganisms that might cause illness; 2008 Irish pork contamination, dioxin contamination of pork products produced in Ireland in 2008; Food contamination in China, a chronology of food contamination and safety incidents in China from 2003 to 2014