Person (or People) Having AIDS

Phytohemagglutinin summary and related information.

Pulmonary Hypertension Association

Polyhydroxyalkanoate, a type of biodegradable plastic

Potentially hazardous asteroid,

Public Housing Agencies in the United States

Phoenix Hebrew Academy

Polyhydroxyaldehyde, a class of carbohydrate.

Amtrak station code for Sky Harbor Airport in Phoenix, Arizona