| ¿µ¹® | spleen | ÇÑ±Û | Áö¶ó |
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| ¿µ¹® | virus | ÇÑ±Û | ¹ÙÀÌ·¯½º |
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| ¿µ¹® | simian virus | ÇÑ±Û | ¿ø¼þÀ̹ÙÀÌ·¯½º |
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| ¿µ¹® | influenza virus | ÇÑ±Û | ÀÎÇ÷翣ÀÚ¹ÙÀÌ·¯½º |
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| EF | ectopic focus; edema factor; ejection fraction; elastic fibril; electric field; elongation factor; e... |
|---|---|
| SFFV | spleen focus-forming virus |
| CFU-S, | CFUS colony-forming unit, spleen; colony-forming unit, stem cells |
| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
| EFFU | epithelial focus-forming unit |
| SFFV | Spleen Focus Forming virus |
|---|---|
| SFFVP | spleen focus-forming virus |
| FFU | focus forming units |
| MCF | mink cell focus forming |
| CFU-S | Colony-forming unit-spleen |
| Friend spleen focus forming virus | <virology> Defective virus found in certain strains of Friend virus, detected by its ability to form foci in spleens of mice and believed to be responsible in those strains for the production of a leukaemia associated with polycythaemia rather than anaemia. (18 Nov 1997) |
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| spleen focus-forming viruses | Murine leukaemia viruses that are replication-defective and rapidly transforming. The envelope gene plays an essential role in initiating erythroleukaemia, manifested by splenic foci, splenomegaly, and polycythemia. Spleen focus-forming viruses are generated by recombination with other viral types including friend p (polycythemia), friend a (anaemia), rauscher, and cas (from wild mice at lake casita, california). (12 Dec 1998) |
|---|---|
| focus-forming assay | <investigation> A lab technique used to find out if a particular piece of DNA contains oncogenes (genes which are associated with cancer). This is done by putting the DNA into animal cells which normally show contact inhibition, or which stop growing when they come into physical contact with other cells or reach a certain density in the culture. If the cells lose contact inhibition and form areas of densely-packed cells (called foci) after receiving the DNA, it means that the DNA did contain oncogenes. (05 Jan 1997) |
| focus-forming unit | A measurement of the concentration of live virus in a given amount of fluid. This is measured by spreading a known amount of the fluid over a layer of cultured cells which are infected by the virus, then counting the number of areas in the culture which look infected. (09 Oct 1997) |
| Friend helper virus | <virology> Mouse (lymphoid) leukaemia virus present in stocks of Friend virus, that was believed at one time to assist its replication. Molecular cloning of Friend virus has since shown that it is nondefective. (18 Nov 1997) |
| Friend leukaemia virus | A murine leukaemia virus producing leukaemia of the reticulum-cell type with massive infiltration of liver, spleen, and bone marrow. It infects dba/2 and swiss mice. (12 Dec 1998) |
| Friend murine leukaemia virus | <virology> Murine leukaemia virus isolated by Charlotte Friend in 1956 whilst attempting to transmit the Erlich ascites tumour by cell free extracts. Causes an unusual erythroblastosis like leukaemia, in which anaemia is accompanied by large numbers of nucleated red cells in blood. does not carry a host derived oncogene, but seems to induce tumours by proviral insertion into specific regions of host genome. (18 Nov 1997) |
| friend virus | A murine leukaemia virus producing leukaemia of the reticulum-cell type with massive infiltration of liver, spleen, and bone marrow. It infects dba/2 and swiss mice. (12 Dec 1998) |
| Friend, Charlotte | <person> U.S. Microbiologist, *1921. See: Friend disease, Friend virus, Friend leukaemia virus. (05 Mar 2000) |
| Friend disease | Mouse leukaemia caused by the Friend leukaemia virus, a member of the family Retroviridae. (05 Mar 2000) |
| Friend murine erythroleukaemia cell | <cell culture> Lines of mouse erythroblasts transformed by the Friend virus, that can be induced to differentiate terminally, producing haemoglobin, by various agents such as dimethyl sulphoxide. (18 Nov 1997) |
| real focus | The point of meeting of convergent rays. (05 Mar 2000) |
| Ghon's focus | Calcification seen in pulmonary parenchyma (usually mid-lung area) and hilar nodes resulting from earlier, usually childhood, infection with tuberculosis. Synonym: Ghon's complex, Ghon's focus, Ghon's primary lesion. (05 Mar 2000) |
| virtual focus | The point from which divergent rays seem to proceed, or that at which they would meet if prolonged backward. (05 Mar 2000) |
| mink cell focus-inducing viruses | Murine leukaemia viruses discovered in 1976 by hartley, wolford, old, and rowe and so named because the viruses originally isolated had the capacity to transform cell foci in mink cell cultures. Mcf viruses are generated in a multi-step process by recombination with other viral types including akr, friend, moloney, and rauscher. (12 Dec 1998) |
| plasma focus | <radiobiology> The Plasma Focus is another device which depends on the pinch effect. Possible applications include both fusion and plasma propulsion, as well as other plasma research. In essence the plasma focus is generated by discharge of a current across the ends of two coaxial insulated conducting pipes. The Plasma Focus caused a huge stir when they generated copious neutrons, until it was discovered that the source of the neutrons was knockoffs from deuterium due to pinch accelerated electrons or ions. Plasma focus is sort of a point version of the Zpinch. (09 Oct 1997) |
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