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A 5

A5 and variants may refer to:

Science and mathematics

A5 regulatory sequence in biochemistry
Annexin A5, a human cellular protein
ATC code A05 Bile and liver therapy, a subgroup of the Anatomical Therapeutic Chemical Classification System
British NVC community A5 (Ceratophyllum demersum community), a British Isles plants community
Subfamily A5, a Rhodopsin-like receptors subfamily
Noradrenergic cell group A5, a noradrenergic cell group located in the Pons
A5 pod, a name given to a group of orcas (Orcinus orca) found off the coast of British Columbia, Canada
A5, the strain at fracture of a material as measured with a load test on a cylindrical body of length 5 times its diameter
A₅, the alternating group on five elements

Alpha 5

Alpha 5 (a5), Alpha-5 (a-5) or Alpha Five may refer to:

Alpha 5 (Power Rangers), a fictional character from the Power Rangers franchise
Alpha Five (database), a relational database management system and rapid application development platform
Integrin alpha-5, a protein encoded by the ITGA5 gen in humans
Alpha-5 beta-1 (a5ß1), an integrin that binds to matrix macromolecules and proteinases and thereby stimulates angiogenesis
Alpha 5 (Minolta) (a-5), an A-mount 35mm SLR by Minolta in 2001, also known as Dynax 5 / Maxxum 5 / Alpha Sweet II
Alpha-5 Digital (a-5D), an A-mount APS-C format DSLR by Konica Minolta in 2005, also known as Dynax 5D / Maxxum 5D / Alpha Sweet Digital (DG-5D)

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