AS has various meanings in the Scientific & Educational category. Discover the full forms, definitions, and usage contexts of AS in Scientific & Educational.
Aortic stenosis (AS or AoS) is the narrowing of the exit of the left ventricle of the heart, such that problems result. It may occur at the aortic valve as well as above and below this level. It typically gets worse over time. Symptoms often come on gradually with a decreased ability to exercise often occurring first. If heart failure, loss of consciousness, or heart related chest pain occurs due to AS the outcomes are worse.
Scientific & EducationalAn autonomous system is a collection of connected Internet Protocol routing prefixes under the control of one or more network operators on behalf of a single administrative entity or domain that presents a common, clearly defined routing policy to the Internet.
Scientific & EducationalThe antisense strand serves as the template for messenger RNA (mRNA) synthesis. Antisense RNA is the non-coding strand complementary to a coding sequence of mRNA, a molecule involved in translating genetic instructions into proteins. Antisense RNA hybridizes with and inactivates mRNA. Antisense drugs are based on the fact that antisense RNA hybridizes with and inactivates mRNA.
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