Pus
Pus is an exudate, typically white-yellow, yellow, or yellow-brown, formed at the site of inflammation during infection. An accumulation of pus in an enclosed tissue space is known as an abscess, whereas a visible collection of pus within or beneath the epidermis is known as a pustule or pimple.
Pus consists of a thin, protein-rich fluid, known as liquor puris, and dead leukocytes from the body's immune response (mostly neutrophils) . During infection, macrophages release cytokines which trigger neutrophils to seek the site of infection by chemotaxis. There, the neutrophils release granules which destroy the bacteria. The bacteria resist the immune response by releasing toxins called leukocidins. As the neutrophils die off from toxins and old age, they are destroyed by macrophages, forming the viscous pus.
Bacteria that cause pus are called pyogenic.
Despite normally being of a whitish-yellow hue, changes in the color of pus can be observed under certain circumstances. Pus is sometimes green because of the presence of myeloperoxidase, an intensely green antibacterial protein produced by some types of white blood cells. Green, foul-smelling pus is found in certain infections of Pseudomonas aeruginosa. The greenish color is a result of the bacterial pigment pyocyanin that it produces. Amoebic abscesses of the liver produce brownish pus, which is described as looking like "anchovy paste". Pus can also have a foul odor, particularly pus from anaerobic infections.
Pus (disambiguation)
Pus is an exudate produced by vertebrates during inflammatory pyogenic bacterial infections.
PUS may also refer to:
See also
Haze (2010 film)
Haze (Turkish: Pus) is a 2010 Turkish drama film, directed by Tayfun Pirselimoğlu, starring Ruhi Sarı as a withdrawn young man who gets caught up with a shadowy criminal plot. The film, which went on nationwide general release across Turkey on May 28, 2010 (2010-05-28), premiered at the 60th Berlin International Film Festival (February 11–21, 2010).
Plot
Reşat, a withdrawn and asocial young man who works at a pirate DVD shop, represses his feelings for the girl next door, and adds excitement to his life with petty theft. The film turns into a thriller when the shadowy Celal, a friend of Reşat's boss, gets shot just after he leaves a package in the shop and Reşat has to make sense of the photo and the gun it contains.
Review
Hürriyet Daily News reviewer Emrah Güler describes the film as, "a story of people living on the edge," and recommends it to those, "who have enjoyed director and writer Pirselimoğlu’s human stories both on screen and in published novels," but not to those, "wanting to see an uplifting and entertaining movie on the weekend."
Normal
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Normal!
Normal! is a 2011 Algerian drama film written and directed by Merzak Allouache. It won the award for Best Film at the 2011 Doha Tribeca Film Festival.
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References
External links
Normal morphism
In category theory and its applications to mathematics, a normal monomorphism or conormal epimorphism is a particularly well-behaved type of morphism. A normal category is a category in which every monomorphism is normal. A conormal category is one in which every epimorphism is conormal.
Definition
A monomorphism is normal if it is the kernel of some morphism, and an epimorphism is conormal if it is the cokernel of some morphism.
A category C is binormal if it's both normal and conormal. But note that some authors will use the word "normal" only to indicate that C is binormal.
Examples
In the category of groups, a monomorphism f from H to G is normal if and only if its image is a normal subgroup of G. In particular, if H is a subgroup of G, then the inclusion map i from H to G is a monomorphism, and will be normal if and only if H is a normal subgroup of G. In fact, this is the origin of the term "normal" for monomorphisms.
On the other hand, every epimorphism in the category of groups is normal (since it is the cokernel of its own kernel), so this category is conormal.
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