feedback suppressor
51Epigenetics — In biology, the term epigenetics refers to changes in gene expression caused by mechanisms other than changes in the underlying DNA sequence. These changes may remain through cell divisions for the remainder of the cell s life and may also last… …
52SA80 — Infobox Weapon name=SA80 caption=L85A1 with SUSAT sight origin=flag|United Kingdom type=Assault rifle is ranged=yes service=1985–present used by=See Users wars=Northern Ireland, 1991 Persian Gulf War, Afghanistan, Iraq War designer= design… …
53Tetrode — A tetrode is an electronic device having four active electrodes. The term most commonly applies to a two grid vacuum tube. It has the three electrodes of a triode and an additional screen grid which significantly changes its behaviour. Grids The… …
54RNA interference — (RNAi) is a mechanism that inhibits gene expression at the stage of translation or by hindering the transcription of specific genes. RNAi targets include RNA from viruses and transposons (significant for some forms of innate immune response), and …
55Ras (protein) — Pfam box Symbol = Ras Name = width =250 caption = Triphosphate Structure of H Ras p21 GNBP in complex with GppNHp and Mg2+ (PDB Code 5p21). Important sequence elements are highlighted. Pfam= PF00071 InterPro= IPR013753 SMART= PROSITE = PDOC00859… …
56Beam tetrode — The problem of secondary emission in the tetrode tube (valve) was solved by Philips/Mullard with the introduction of a suppressor grid to produce the pentode construction. Since Philips held a patent on this design, other manufacturers were keen… …
57CTP synthase — Cytidine triphosphate Identifiers EC number 6.3.4.2 …
58AP-1 (transcription factor) — In molecular biology, the activator protein 1 (AP 1) is a transcription factor which is a heterodimeric protein composed of proteins belonging to the c Fos, c Jun, ATF and JDP families. AP 1 upregulates transcription of genes containing the TPA… …
59Diet and cancer — are associated. While it is not yet possible to provide quantitative estimates of the overall risks, it has been estimated that 35 percent of cancer deaths may be related to dietary factors.[1] Almost all cancers (80–90%) are caused by… …
60T91 assault rifle — Infobox Weapon name=T91 caption= Type 91 with scope. origin= flag|ROC (Taiwan) type= Assault rifle is ranged=yes service= 2003 present used by= See Users wars= designer= design date= 2002 manufacturer= 205th Armory production date= 2003 present… …
