BTB may refer to:
In biology:
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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 in that it is not a blood-organ barrier in a strict sense, but is formed ...
in testicular anatomy
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Blood–thymus barrier
* Bovine tuberculosis or ''
Mycobacterium bovis
''Mycobacterium bovis'' is a slow-growing (16- to 20-hour generation time) aerobic bacterium and the causative agent of tuberculosis in cattle (known as bovine TB). It is related to '' Mycobacterium tuberculosis'', the bacterium which causes t ...
'', a disease originating in cattle
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Breakthrough bleeding
Intermenstrual bleeding, previously known as metrorrhagia, is uterine bleeding at irregular intervals, particularly between the expected menstrual periods. It is a cause of vaginal bleeding.
In some women, menstrual spotting between periods occur ...
, of the menstrual period
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Bromothymol blue
Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator. It is mostly used in applications that require measuring substances that would have a relatively neutral pH (near 7). A common use is for measuring the pre ...
, a chemical indicator for weak acids and bases
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BTB/POZ domain
The BTB/POZ domain is a common structural domain contained within some proteins.
The BTB (for BR-C, ttk and bab) or POZ (for Pox virus and Zinc finger) domain is present near the N-terminus of a fraction of zinc finger proteins and in proteins th ...
, a protein domain
In other uses:
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Belgian Union of Transport Workers
The Belgian Union of Transport Workers ( nl, Belgische Transportbond, BTB; french: Union Belge du Transport, UBT) is a trade union representing transport workers in Belgium.
History
The union was founded on 6 June 1913, with the merger of numero ...
, a trade union in Belgium
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Branch target buffer
In computer architecture, a branch target predictor is the part of a processor that predicts the target of a taken conditional branch or an unconditional branch instruction before the target of the branch instruction is computed by the execution ...
, a computer processor element
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Bétou Airport, in the Republic of the Congo (IATA airport code: BTB)
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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 Fre ...
(1870–1917), British book illustrator (credited as B.T.B.)
*''
Bob the Builder
''Bob the Builder'' is a British animated children's television series created by Keith Chapman for HIT Entertainment and Hot Animation. The series follows the adventures of Bob, a building contractor, specialising in masonry, along wi ...
'', British children's television series
{{disambiguation