A type or type A may refer to: * A-type asteroid, a type of relatively uncommon inner-belt asteroids *

A type blood The ABO blood group system is used to denote the presence of one, both, or neither of the A and B antigens on erythrocytes. For human blood transfusions, it is the most important of the 43 different blood type (or group) classification system ...

, a type in the ABO blood group system *

A-type inclusion Downie bodies, also known as a type of A-type inclusion, are a type of inclusion body associated with cowpox. They are named for Allan Watt Downie. A Downie body is different from a ''Downey cell'' which is a reactive lymphocyte. They are named f ...

, a type of cell inclusion *

A-type potassium channel Voltage-gated potassium channels (VGKCs) are transmembrane channels specific for potassium and sensitive to voltage changes in the cell's membrane potential. During action potentials, they play a crucial role in returning the depolarized ce ...

, a type of voltage-gated potassium channel * A type proanthocyanidin, a specific type of flavonoids * A-type star, a class of stars *

Type A Dolby Noise Reduction A Dolby noise-reduction system, or Dolby NR, is one of a series of noise reduction systems developed by Dolby Laboratories for use in analog audio tape recording. The first was '' Dolby A'', a professional broadband noise reduction s ...

, a type of Dolby noise-reduction system *

Type A climate Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * Typ ...

, a type in the Köppen climate classification *

Type A flu '' A virus'' (''IAV'') causes influenza in birds and some mammals, and is the only species of the genus ''Alphainfluenzavirus'' of the virus family ''Orthomyxoviridae''. Strains of all subtypes of influenza A virus have been isolated from wil ...

, a type of influenza virus * Type A evaluation of uncertainty, an uncertainty in measurement that can be inferred, for example, from repeated measurement *

Type A (label) A type or type A may refer to: * A-type asteroid, a type of relatively uncommon inner-belt asteroids * A type blood, a type in the ABO blood group system * A-type inclusion, a type of cell inclusion * A-type potassium channel, a type of voltage-g ...

, a music label that for example produced the 2004 album '' What Doesn't Kill You...'' by Candiria * Type A personality, a personality type in the Type A and Type B personality theory * Type A submarine, a class of submarines in the Imperial Japanese Navy which served during the Second World War * Hemophilia type A, a type of haemophilia * Renault A-Type engine, a straight-4 automobile engine * Toyota Type A engine * Vauxhall A-Type, a car manufactured by Vauxhall Motors from 1908 to 1915 * Type A (artist collective), a pair of New York-based artists named Adam Ames and Andrew Bordwin * A-type granite a type of granite rock *

Adenosine receptor The adenosine receptors (or P1 receptors) are a class of purinergic G protein-coupled receptors with adenosine as the endogenous ligand. There are four known types of adenosine receptors in humans: A1, A2A, A2B and A3; each is encoded by a dif ...

See also