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Pathogen
A pathogen or infectious
agent is a biological agent
that causes disease or
illness to its host. The
term is most often used for
agents that disrupt the
normal physiology of a
multicellular animal or
... > full story
Prion
A prion (short for
proteinaceous infectious
particle) is a unique type
of infectious agent, as it
is made only of protein. It
is now commonly accepted
that prions are responsible
for a number of previously
... > full story
Microorganism
A microorganism or microbe
is an organism that is so
small that it is microscopic
(invisible to the naked
eye). Microorganisms are
often illustrated using
single-celled, or
unicellular organisms;
... > full story
Bovine spongiform encephalopathy
Bovine spongiform
encephalopathy (BSE),
commonly known as mad cow
disease, is a fatal,
neurodegenerative disease of
cattle. BSE has attracted
wide attention because it
... > full story
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Phytopathology
Phytopathology or plant pathology is the science of diagnosing and managing plant diseases. It covers all infectious agents that attack plants and abiotic disorders, but does not include herbivory by ... > more -
Vector (biology)
Traditionally in medicine, a vector is an organism that does not cause disease itself but which spreads infection by conveying pathogens from one host to another. Species of mosquito, for example, ... > more -
Transmission (medicine)
In medicine, transmission is the passing of a disease from an infected individual or group to a previously uninfected individual or group. In order to survive, microorganisms that require human hosts ... > more -
Microorganism
A microorganism (also spelled as microrganism) or microbe is an organism that is microscopic (too small to be seen by the human eye). The study of microorganisms is called microbiology. ... > more -
Salmonellosis
Salmonellosis is an infection with Salmonella bacteria. Most people infected with Salmonella develop diarrhea, fever, and abdominal cramps 6 to 72 hours after infection. In most cases, the illness ... > more -
Escherichia coli
Escherichia coli, usually abbreviated to E. coli, is one of the main species of bacteria that live in the lower intestines of warm-blooded animals, including birds and mammals. They are necessary for ... > more
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