BTB may refer to:
In biology:
*
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 be ...
in testicular anatomy
*
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 tub ...
'', a disease originating in cattle
*
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 occ ...
, of the menstrual period
*
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
*
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
A zinc finger is a sma ...
, a protein domain
In other uses:
*
Belgian Union of Transport Workers, a trade union in Belgium
*
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
*
Bétou Airport, in the Republic of the Congo (IATA airport code: BTB)
*
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 Fr ...
(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 with ...
'', British children's television series
{{disambiguation
