American Real Estate Society 
Amateur Radio Emergency Service 
advanced railroad electronics system 
Amateur Radio Emergency Services 
Automated Reliability Estimation System 
acute rejection episodes 
adenylate uridylate-rich elements 
Administrative Resource Enterprise Servi… 
advanced reentry system 
Advanced Regional Exploratory System 
Advanced Research and Experiments in Sen… 
Advanced Research Electromagnetic Simula… 
Advanced Robotic Engagement System 
Advanced Rocket Engine/Storable 
adverse radiation effects 
Aerial Regional-scale Environmental Surv… 
Affordable Responsive Spacelift 
Amateur Radio Disaster Services 
Amateur Radon Emergency Services 
Amazon River Elementary School 
AMC Readiness Evaluation System 
AMERIRESOURCE TECHNOLOGIES, INC. 
androgen-response elements 
androgen-responsive elements 
Antioxidant responsive elements 
antioxidant-response elements 
AU-rich elements