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argon

 (Ar) [ahr´gon]
a chemical element, atomic number 18, atomic weight 39.948. (See Appendix 6.)
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Ar

Symbol for argon.
Farlex Partner Medical Dictionary © Farlex 2012

AREG

A gene on chromosome 4q13-q21 that encodes a member of the epidermal growth factor family, which is an autocrine growth factor and a mitogen for astrocytes, Schwann cells and fibroblasts. AREG interacts with the EGF/TGF-alpha receptor to promote the growth of normal epithelial cells and inhibits certain aggressive carcinoma cell lines.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

AR

Autosomal recessive, also
1. Access recirculation, see there.
2. Acoustic reflex.
3. Active resistance–rehabilitation medicine.
4. Adrenergic receptor.
5. Allergic reaction.
6. Allergic rhinitis.
7. Aortic regurgitation.
8. Apical rate.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

AR

, A/R
Abbreviation for accounts receivable.

Ar

Symbol for argon
Medical Dictionary for the Health Professions and Nursing © Farlex 2012