PNA can refer to different things depending on the context. Here are some possible meanings:
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Pulmonary nodular amyloidosis (PNA): This is a rare phenomenon that affects the lungs and is characterized by the presence of nodules made of amyloid protein. It can be mistaken for lung cancer or other lung diseases.
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Pneumonia (PNA): This is a viral or bacterial infection of the lungs that can cause mild to severe illness in people of all ages. Symptoms of pneumonia include shortness of breath, cough, fever, and fatigue.
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Peptide nucleic acid (PNA): This is an artificially synthesized polymer similar to DNA or RNA. It has been used in molecular biology procedures, such as gene therapy and diagnostics. PNAs backbone is composed of repeating N-(2-aminoethyl)-glycine units linked by peptide bonds, and the various purine and pyrimidine bases are linked to the backbone by a methylene bridge (-CH2-) and a carbonyl group (-(C=O)-) .
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Pentose nucleic acid (PNA): This is an obsolete term for RNA, which was once thought to contain a pentose sugar instead of a ribose sugar.
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Professional Negotiations Act (PNA): This is a law in the state of Kansas that covers public school teachers and other professional employees. It establishes procedures for collective bargaining and dispute resolution between employers and employees.
