* Expression of viral proteins coupled to MHC proteins on the surface of the infected cell, allowing recognition by cells of the immune system ( such as Natural Killer and cytotoxic T cells ) that then induce the infected cell to undergo apoptosis.

NK cells differ from Natural Killer T cells ( NKT ) phenotypically, by origin and by respective effector functions ; often NKT cell activity promotes NK cell activity by secreting IFNγ.

* Binns C ( June 19, 2006 ), Natural Body Guards: How Your Killer Cells Get Motivated.

ro: Celulă Natural Killer

In immune responses, upon interaction with a target cell in response to antigen-specific loaded antigen-presenting cells, immune cells, such as the T-Cells, Natural Killer Cells, and cytotoxic t-lymphocytes, localize their MTOCs near the contact zone between the immune cell and the target cell.

Some strains of LAB may affect pathogens by means of competitive inhibition ( i. e., by competing for growth ) and there is evidence to suggest that they may improve immune function by increasing the number of IgA-producing plasma cells, increasing or improving phagocytosis as well as increasing the proportion of T lymphocytes and Natural Killer cells.

* Sandy Fawkes, Natural Born Killer: In Love and on the Road with a Serial Killer, 2004, John Blake Publishing, London

This therapy is in routine clinical practice in Japan and Autologous immune enhancement therapy involving Natural Killer Cells ( NK ) cells and cytotoxic T Lymphocytes ( CTLs ) is being practised in various Asian Countries especially in Japan and Malaysia.

Like other ' unconventional ' T cell subsets bearing invariant TCRs, such as CD1d-restricted Natural Killer T cells, γδ T cells exhibit characteristics that place them at the border between innate and adaptive immunity.

Natural Killer T ( NKT ) cells are activated by CD1d-presented antigens, and rapidly produce Th1 and Th2 cytokines, typically represented by interferon-gamma and IL-4 production.

* Natural Born Killer ( 2012 )

* Natural Born Killer

* Decidual Natural Killer Cell.

( 1984 ) Neuroethology: Nerve Cells and the Natural Behavior of Animals.

This involves immune cells such as the Natural killer Cells ( NK cells ), Lymphokine Activated killer cell ( LAK ), Cytotoxic T Lymphocytes ( CTLs ), Dendritic Cells ( DC ), etc., which are either activated in vivo by administering certain cytokines such as Interleukins or they are isolated, enriched and transfused to the patient to fight against cancer.

Natural killer cells ( or NK cells ) are a type of cytotoxic lymphocyte critical to the innate immune system.

Natural killer cell activation is determined by the balance of inhibitory and activating receptor stimulation i. e. if the inhibitory receptor signaling is more prominent then NK cell activity will be inhibited, similarly if the activating signal if dominant then NK cell activation will result

They found consistent stress-related increases in numbers of total white blood cells, as well as decreases in the numbers of helper T cells, suppressor T cells, and cytotoxic T cells, B cells, and Natural killer cells ( NK ).

Naturalistic stressors were associated with increases in number of circulating neutrophils, decreases in number and percentages of total T cells and helper T cells, and decreases in percentages of Natural killer cell ( NK ) cells and cytotoxic T cell lymphocytes.

In contrast to cytotoxic T lymphocytes, Natural killer ( NK ) cells are normally inactivated upon recognizing MHC I molecules on the surface of cells.

Group 2 CD1 molecules activate a group of T cells, known as Natural killer T cells because of their expression of NK surface markers such as CD161.

Natural monopolies arise where the largest supplier in an industry, often the first supplier in a market, has an overwhelming cost advantage over other actual or potential competitors ; this tends to be the case in industries where fixed costs predominate, creating economies of scale that are large in relation to the size of the market, as is the case in water and electricity services.

Natural hazards include late spring droughts which often are followed by severe flooding.

Natural gas is often informally referred to simply as gas, especially when compared to other energy sources such as oil or coal.

Natural hazards: Summer winds often raise large sandstorms and dust storms in the interior during periodic droughts.

Natural language is often used to specify the execution semantics of languages commonly used in practice.

Thanks to being a scripting language with module architecture, syntax simplicity and rich text processing tools, Python is often used for Natural language processing tasks.

Natural pearls will often show larger cavities where organic matter has dried out and decomposed.

" Synergistic effects of various kinds have played a major causal role in the evolutionary process generally and in the evolution of cooperation and complexity in particular ... Natural selection is often portrayed as a “ mechanism ”, or is personified as a causal agency ...

Natural complex systems often exhibit such topologies.

Natural rubber is often vulcanized, a process by which the rubber is heated and sulfur, peroxide or bisphenol are added to improve resistance and elasticity, and to prevent it from perishing.

Philosophiæ Naturalis Principia Mathematica, Latin for " Mathematical Principles of Natural Philosophy ", often referred to as simply the Principia, is a work in three books by Sir Isaac Newton, first published 5 July 1687.

Natural green color diamonds most often have merely a surface coloration caused by natural irradiation, which does not extend through the stone.

Natural phenomena such as thunderstorms or winds, that are often part of the drama, cannot be recreated in their original form.

Natural triggers of avalanches include additional precipitation, rapid warming, rock fall, ice fall, and other impulse loads ; however, even when environmental conditions are consistent, the seasonal snowpack will evolve over time and develop stresses, often from the downslope creep of the snowpack.

He often advocated leaving aside the Qur ' an and Vedas and simply following Sahaja path, or the Simple / Natural Way to oneness in God.

Stewart Holbrook documented the emergence and westward migration of the classic American lumberjack in his first book, Holy Old Mackinaw: A Natural History of the American Lumberjack, and often wrote colorfully about lumberjacks in his subsequent books, romanticizing them as hard-drinking, hard-working men.

Natural vegetation is mostly prairie, but stream valleys often have fine forests of cottonwood, oak, elm, ash, pecan, sycamore, and other species.

The police are responsible for enforcing part I of the Wildlife and Countryside Act 1981, often advised by Natural England ( Natural England, 2007 ) and will investigate wildlife offences ; usually performed by Wildlife Crime Officers ( WCOs ).

Specimens he collected went to the Natural History Museum called the British Museum ( Natural History ) | BM ( NH ) and to private collectors ; yet Bates still retained a huge reference collection and was often consulted on difficult identifications.

Modern definitions from biologists often focus on the scientific study of individual organisms in their environment, as seen in this definition by M. Bates: " Natural history is the study of animals and Plants-of organisms.

He thinks about the Museum of Natural History, which he often visited as a child.

Historical marker in Academy Park ( Albany, New York ) commemorating Henry's work with electricity. Henry excelled at his studies ( so much so, that he would often be helping his teachers teach science ) that in 1826 he was appointed Professor of Mathematics and Natural Philosophy at The Albany Academy by Principal T. Romeyn Beck.

Natural stone quarried from the earth is often considered a luxury and tends to be a highly durable surface, thus a highly desirable commodity.