Question

Wang, y. Et al. Il-34 is a tissue-restricted ligand of csf1r required for the development of langerhans cells and microglia. Nat. Immunol. 13, 753760 (2012).

Answer 1

In general: Nasal breathing is healthierthan mouth breathing for several reasons. ... Exhaling through the nose, which is smaller than the mouth, creates greater air pressure andtherefore a slower exhalation. This gives the lungs extra time to extract agreater amount of oxygen
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