This document lists numerous medical abbreviations across multiple pages. It begins with abbreviations such as AP for action potential, APC for antigen presenting cell, and APD for action potential duration. It then continues for several pages listing abbreviations such as A-I/II/III for angiotensin I/II/III, AA for amino acid, ABC for ATP-binding cassette transporter, and more. The document provides a comprehensive reference list of common medical abbreviations.