A4

n (Printing, Lithography & Bookbinding) a. a standard paper size, 210 × 297 mmb. (as adjective): an A4 book. See also A sizes

A4

(1) See A4 paper.

(2) An ARM-based system-on-chip (SoC) used in Apple mobile devices including the iPhone 4, 1st-generation iPad and 4th-generation iPod touch.

A4

APP

A gene on chromosome 21q21.3 that encodes a cell surface receptor and transmembrane precursor protein which is cleaved by secretases to form various peptides.
Molecular pathology
APP mutations are implicated in autosomal dominant Alzheimer’s disease and cerebroarterial amyloidosis (cerebral amyloid angiopathy).

A4

Amyloid β peptide

FinancialSeeAPP

A4

Acronym	Definition
A4➣Alternative 4
A4➣Aggregate 4 (German V2 rocket)
A4➣Automatic Four Speed
A4➣International Paper Size closest to US Letter Size; 210mmx297mm or 8.27x11.69"
A4➣Cryptographic standard for mobile/cellular phones

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