If your mucus is gray or black... …you likely inhaled dark-colored particles, like smoke from a fire or heavy exhaust.

A mucous membrane or mucosa is a membrane that lines various cavities in the body and covers the surface of internal organs. It consists of one or more layers of epithelial cells overlying a layer of ...

secrete a lubricating mucus that helps the contents travel smoothly. However, the multiple cell types within a tissue don't just have different functions. They also have different transcriptional ...

The mucus barrier is essential in preventing viruses and bacteria from entering our tissues; but this function also poses a perennial problem for drug delivery (Fig. 1). Ying-Ying Wang and ...

Lubricating spray also helps loosen dry, crusted mucus clearing the way for a gentle nose blowing. So, pull up the covers, grab a tissue and gently blow your way to good health. More from Science ...

The police warned the population that any possible contact with the material could cause damage to their health, both at the respiratory level and injuries to epithelial and mucous tissues.

Always start with a clean tissue and make sure to cover your nose ... A gentle nasal rinse can help flush out mucus naturally. Saline sprays work wonders for moistening dry nasal passages.