As

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AS

 (L.)
au´ris sinis´tra (left ear).

As

Symbol for arsenic.

AS

[L.] au´ris sinis´tra (left ear).

AS

aortic stenosis; arteriosclerosis.

As

arsenic.

As

symbol for the element arsenic.

AS

abbreviation for aortic stenosis.

As

The profile area of a slab-sectioned corpuscle or nucleus, a quantity measurable by image cytometry.

AS

Abbreviation for:
absence seizure
absence of seizures
accessory spleen
acoustic schwannoma
acoustic stimulation
active surveillance
acute stress
Adams-Stokes
adenosquamous carcinoma
adult services
allele specific
Alport syndrome
ambulatory surgery
anabolic steroid
anal sphincter
anaphylactic shock
androgen suppression
angiosarcoma
anionic surfactant
ankylosing spondylitis
anovulatory syndrome
anterior scalene
anteroseptal
antisense
antiserum
aortic stenosis
arteriosclerosis
artificial sweetener
asbestos
ascending aorta
Ascaris suum
ascorbic acid
aseptic meningitis
asparagine synthetase
Asperger syndrome
assisted suicide
Associate of Science
Associate Specialist (Medspeak-UK) 
atherosclerosis
atrial septum
atropine sulphate
attempted suicide
audiogenic seizure
audiovisual stimulation

As

Symbol for arsenic

ankylosing spondylitis

; AS autoimmune disease of young men of human leukocyte antigen (HLA) B27 tissue type, characterized by high titres of tumour necrosis factor, progressive spondyloarthropathy, inflammatory back pain, limited spinal mobility, limited chest expansion and sacroiliitis; typically presenting with bursitis, buttock and heel pain, marked early-stage systemic fatigue, late-stage increased spinal curvature and spinal ankylosis ('bamboo' spine); foot problems (e.g. pain, plantar and posterior heel spur formation, soft-tissue swelling and bursitis) occur in the earlier stages; late-stage foot symptoms include joint erosions, periosteal proliferation and anklyosis due to joint margin exostoses (Table 1)
Table 1: Common features of the range of types of sero-negative inflammatory arthritis
FeatureComment
Leukocyte antigen type90% of patients with sero-negative arthritis test positive for human leukocyte antigen (HLA) B27
Skeletal involvementAxial skeleton/spinal involvement; with back pain (common presenting first symptom)
EnthesopathyInflammation at insertions of ligaments/tendons (posterior calcaneum, plantar calcaneum, base of fifth metatarsal, forefoot)
Soft-tissue swellingsLocalized swelling at Achilles tendon insertion
Bursitis of congenital/adventitious bursae
SynovitisDactylitis/'sausage' toe
Generalized swelling of fore foot
VasculitisNote: Does not tend to affect foot in sero-negative arthritides
RadiographsBone/periosteal fluffy/'whiskery' proliferation
New bone/spur formation at entheses, secondary to inflammation

As

chemical symbol, arsenic.
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References in periodicals archive ?
Although the work was similar on all of the American Samoa islands, conditions were more challenging on the Manu'a Islands.
It takes a special understanding to ship to American Samoa and other islands in the region, Lamy and Feist explain.
We thank Tele Hill, Sharmain Mageo, John DePasquale, Paeae Sakalaia, Tapakea Tufono, Fui Mei Lin, Iris Hirata, the Department of Samoan Affairs, village chiefs and mayors of American Samoa, Don Vargo, and Mark Schmaedick for providing assistance and advice.
Archaeological data recovery for the American Samoa Power Authority sewer collection system in Tualauta County, Tutuila Island, American Samoa.
Barbara Lawrence from Llanbedrog, near Pwllheli (pictured inset right) has told of her relief after her daughter Alice (left) survived the tsunami that hit Pago Pago in American Samoa.
AFTERMATH: Wreckage in the village of Fagatogo, American Samoa
American Samoa tourism chief David Vaeafe said water levels rose about three minutes after the tsunami warning, with small villages around the capital devastated.
The tremor happened 120 miles from the coast of American Samoa.
3, struck around dawn yesterday, about 120 miles (190km) from American Samoa, a US territory which is home to 65,000 people.
5 meters above normal sea level off American Samoa, said the Pacific Tsunami Warning Center.
Congressman Faleomavaega, Representative of American Samoa in the United States Congress and Chairman of the Subcommittee on Asia, the Pacific, and the Global Environment of the House Committee of Foreign Affairs, arrived in Kyrgyzstan on June 29.

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