Btb Verlag
BTB may refer to: In biology: * Blood–testis barrier in testicular anatomy * Blood–thymus barrier * bTB, bovine tuberculosis or ''Mycobacterium bovis'', a disease in cattle * Breakthrough bleeding, of the menstrual period * Bromothymol blue, a chemical indicator for weak acids and bases * BTB/POZ domain, a protein domain In other uses: *Belgian Union of Transport Workers, a trade union in Belgium *Branch target buffer, a computer processor element * Bétou Airport, in the Republic of the Congo (IATA airport code: BTB) *Basil Temple Blackwood (1870–1917), British book illustrator (credited as B.T.B.) *''Bob the Builder'', British children's television series *Board-to-board connector Board-to-board (BTB) connectors are used to connect printed circuit boards (PCB), electronic components that contain a conductive pattern printed on the surface of the insulating base in an accurate and repeatable manner. Each terminal on a BTB conn ...

Blood–testis Barrier
The blood–testis barrier is a physical barrier between the blood vessels and the seminiferous tubules of the animal testes. The name "blood-testis barrier" is misleading as it is not a blood-organ barrier in a strict sense, but is formed between Sertoli cells of the seminiferous tubule and isolates the further developed stages of germ cells from the blood. A more correct term is the Sertoli cell barrier (SCB). Structure The walls of seminiferous tubules are lined with primitive germ layer cells and by Sertoli cells. The barrier is formed by tight junctions, adherens junctions and gap junctions between the Sertoli cells, which are sustentacular cells (supporting cells) of the seminiferous tubules, and divides the seminiferous tubule into a basal compartment (outer side of the tubule, in contact with blood and lymph) and an endoluminal compartment (inner side of the tubule, isolated from blood and lymph). The tight junctions are formed by intercellular adhesion molecules in betwe ...
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Blood–thymus Barrier
The blood–thymus barrier regulates exchange of substances between the circulatory system and thymus, providing a sequestered environment for immature T cells to develop. The barrier also prevents the immature T cells from contacting foreign antigens (since contact with antigens at this stage will cause the T cells to die by apoptosis). The barrier is formed by the continuous blood capillaries in the thymic cortex, reinforced by type 1 epithelial reticular cells (sometimes called thymic epithelial cells) and macrophages Macrophages (; abbreviated MPhi, φ, MΦ or MP) are a type of white blood cell of the innate immune system that engulf and digest pathogens, such as cancer cells, microbes, cellular debris and foreign substances, which do not have proteins that .... The existence of this barrier was first proposed in 1961 and demonstrated to exist in mice in 1963. See also * * * * * References {{DEFAULTSORT:Blood-thymus barrier Thorax (human anatomy) Organs (a ...
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Mycobacterium Bovis
''Mycobacterium bovis'' is a slow-growing (16- to 20-hour generation time) Aerobic organism, aerobic bacterium and the causative agent of tuberculosis in cattle (known as bovine TB). It is related to ''Mycobacterium tuberculosis'', the bacterium which causes tuberculosis in humans. ''M. bovis'' can zoonosis, jump the species barrier and cause tuberculosis-like infection in humans and other mammals. Bacterium morphology and staining The bacteria are curved or straight rods. They sometimes form filaments, which fragment into Bacillus (shape), bacilli or coccus, cocci once disturbed. In tissues, they form slender rods, straight or curved, or club-shaped. Short, relatively plump bacilli (rods) are seen in tissue smears, and large slender beaded rods in culture. They have no Flagellum, flagella or Fimbria (bacteriology), fimbria, and no Bacterial capsule, capsule. ''Mycobacterium tuberculosis'' group bacteria are 1.0-4.0 μm long by 0.2-0.3 μm wide in tissues. In cultur ...
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Breakthrough Bleeding
Intermenstrual bleeding (IMB), or metrorrhagia, is vaginal bleeding at irregular intervals between expected menstrual periods. It may be associated with bleeding with sexual intercourse. The term metrorrhagia, in which metro means measure and -rrhagia means abnormal flow, is no longer recommended. In some women, menstrual spotting between periods occurs as a normal and harmless part of ovulation. Some women experience acute mid-cycle abdominal pain around the time of ovulation (sometimes referred to by the German term for this phenomenon, ''mittelschmerz''). This may also occur at the same time as menstrual spotting. The term breakthrough bleeding (or breakthrough spotting) is usually used for women using hormonal contraceptives, such as IUDs or oral contraceptives. It refers to bleeding or spotting between any expected withdrawal bleeding, or at any time if none is expected. If spotting continues beyond the first 3-4 cycles of oral contraceptive use, a woman should have he ...
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BTB/POZ Domain
The BTB/POZ domain (BTB for BR-C, ttk and bab or POZ for Pox virus and Zinc finger) is a structural domain found in proteins across the domain Eukarya. Given its prevalence in eukaryotes and its absence in Archaea and bacteria, it likely arose after the origin of eukaryotes. While primarily a protein-protein interaction domain, some BTB domains have additional functionality in transcriptional regulation, cytoskeletal mobility, protein ubiquitination and degradation, and ion channel formation and operation. BTB domains have traditionally been classified by the other structural features present in the protein. Discovery The BTB/POZ domain was first described by two independent research groups in 1994. Researchers at UCLA found a conserved 115 amino acid motif in nine Drosophila proteins, including Broad complex, tramtrack, and bric-a-brac, and labelled the conserved region the BTB domain. At the same time, a group at Imperial Cancer Research Fund Laboratories in London discovered ...
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Belgian Union Of Transport Workers
Belgian may refer to: * Something of, or related to, Belgium * Belgians, people from Belgium or of Belgian descent * Languages of Belgium, languages spoken in Belgium, such as Dutch, French, and German *Ancient Belgian language, an extinct language formerly spoken in Gallia Belgica *Belgian Dutch or Flemish, a variant of Dutch *Belgian French, a variant of French *Belgian horse (other), various breeds of horse *Belgian waffle, in culinary contexts * SS ''Belgian'', a cargo ship in service with F Leyland & Co Ltd from 1919 to 1934 *''The Belgian'', a 1917 American silent film See also * *Belgica (other) *Belgic (other) Belgic may refer to: * an adjective referring to the Belgae, an ancient confederation of Celto-Germanic tribes * a rarer adjective referring to the Low Countries or to Belgium * , several ships with the name * Belgic ware, a type of pottery * Bel ...

Branch Target Buffer
In computer architecture, a branch target predictor is the part of a processor that predicts the target, i.e., the address of the instruction that is executed next, of a taken conditional branch or unconditional branch instruction before the target of the branch instruction is computed by the execution unit of the processor. Branch target prediction is not the same as branch prediction, which guesses whether a conditional branch will be taken or not-taken in a binary manner. In more parallel processor designs, as the instruction cache latency grows longer and the fetch width grows wider, branch target extraction becomes a bottleneck. The recurrence is: * Instruction cache fetches block of instructions * Instructions in block are scanned to identify branches * First predicted taken branch is identified * Target of that branch is computed * Instruction fetch restarts at branch target In machines where this recurrence takes two cycles, the machine loses one full cycle of fe ...
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Bétou Airport
Bétou Airport is an airport within the town of Bétou in the Likouala Department, Republic of the Congo. The runway also serves as part of the road leading westward out of town. Bétou is on the Ubangi River, the border with the Democratic Republic of the Congo The Democratic Republic of the Congo (DRC), also known as the DR Congo, Congo-Kinshasa, or simply the Congo (the last ambiguously also referring to the neighbouring Republic of the Congo), is a country in Central Africa. By land area, it is t .... East approach and departure will cross the river into the DRC. See also * * * List of airports in the Republic of the Congo * Transport in the Republic of the Congo References External linksOurAirports - Bétou* Airports in the Republic of the Congo {{RCongo-airport-stub ...
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Basil Temple Blackwood
Lord Ian Basil Gawaine Hamilton-Temple-Blackwood (4 November 18703 July 1917), known as Lord Basil Temple Blackwood, was a British lawyer, civil servant and book illustrator. Early life Temple Blackwood was the third son and fifth child of Frederick Hamilton-Temple-Blackwood, 1st Marquess of Dufferin and Ava and Hariot Hamilton-Temple-Blackwood. He was born in Clandeboye, Ireland. After spending part of his childhood in Canada, where his father was Governor General, he attended Harrow School. He went up to Balliol College, Oxford in 1891, but never graduated. Whilst at Oxford, he became friends with Hilaire Belloc, with whom he would enjoy long walks and canoeing trips. Illustrations In 1896, Belloc approached Blackwood to illustrate his book of humorous children's verse, '' The Bad Child's Book of Beasts''. Blackwood's amusing pen and ink sketches were in a style which has been described as "German expressionism", and were credited only to "B.T.B.". The book was an immediate ...
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Bob The Builder
''Bob the Builder'' is a British animated children's television series created by Keith Chapman for HIT Entertainment which ran from to in the United Kingdom through the CBBC strand and later CBeebies. The series centres on the adventures and escapades of a general contractor named Bob who owns a team of anthropomorphised construction vehicles that go about their day helping out with construction work in several towns. The show used stop-motion animation for most of the series as well as ''Project: Build It'', provided by Hot Animation in Manchester. The series changed to CGI animation in 2010 for its final two seasons; titled ''Ready, Steady, Build!'', of which SD Entertainment completed animation production. Following the series' conclusion, HIT Entertainment was purchased by US toy company Mattel for $680 million. In October 2014, the company announced a new series that would feature changes in the setting, casting and character designs. The revival aired on Cha ...
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