Bronchial glands

... Airway secretions are a type of mucus, whose main component is a substance called mucin, which is made up of mucoproteins and mucopolysaccharides. There are two types of cells that produce mucin: bronchial glands and goblet cells, but the bronchial glands play a much larger role, with the ratio said to be 40:1. When bronchial glands are viewed under a microscope, in healthy individuals, there are roughly equal numbers of serous-producing cells (approximately 35 μm in diameter) and mucus-producing cells (approximately 50 μm in diameter), but in cases of chronic bronchitis, the number of mucus-producing cells is overwhelmingly greater, and they also increase in size. ...

*Some of the terminology that mentions "bronchial glands" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…　気道分泌液は一種の粘液であり，その構成成分はおもにムコタンパク質とムコ多糖類からなるムチンと呼ばれるものである。これらを産出する細胞は気管支腺と杯細胞の二つであるが，気管支腺がはるかに大きな役割をしており，その比率は40：1といわれる。気管支腺を顕微鏡で見ると，健康人では漿液産生細胞(径約35μm)と粘液産生細胞(径約50μm)とがほぼ同数であるが，慢性気管支炎などでは圧倒的に粘液産生細胞が多くなり，しかも大きさが増す。…

※「気管支腺」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報