What does PA stand for?

Pulmonary Artery

The pulmonary artery carries deoxygenated blood from the heart to the lungs. It is one of the only arteries that carry deoxygenated blood.

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Port Authority

A government body which in international shipping maintains various airports and/or ocean cargo pier facilities, transit sheds, loading equipment warehouses for air cargo, etc. Has the power to levy dockage and wharfage charges, landing fees, etc.

Pathology

Pathology is a significant component of the causal study of disease and a major field in modern medicine and diagnosis. The term pathology itself may be used broadly to refer to the study of disease in general, incorporating a wide range of bioscience research fields and medical practices, or more narrowly to describe work within the contemporary medical field of "general pathology," which includes a number of distinct but inter-related medical specialties which diagnose disease mostly through the analysis of tissue, cell, and body fluid samples.

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