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Why does the surface temperature of a low-mass protostar remain nearly constant as its core contracts?
Pneumonia
An infectious respiratory condition characterized by inflammation of the lungs.
Breathing Difficulty
A condition where one experiences challenges in inhaling or exhaling air, often an indicator of respiratory issues or diseases.
Hepatitis B Virus
A serious liver infection caused by the hepatitis B virus (HBV), which can become chronic and lead to liver failure, cancer, or cirrhosis.
Viral Carcinogen
A virus known to cause cancer in humans or animals.
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