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

This cold and flu season, you may be looking for clues you're getting better anywhere you can find them, even in the color of ...

Section of the colon from mice deleted of KChIP3 was stained to detect mucus (in blue). Mucus producing cells are located in the colonic crypts were they secrete mucus to the lumen of the colon.

Scientists have also found some evidence that mucus can reduce drag ... In addition, the team gathered some common carp and blue catfish, two fish that don’t climb up onto land, to compare ...

you’ve likely examined your mucus color, from yellow to green, for signs you may be healing. “We are in the midst of one of the most severe flu seasons in the past few decades, and it is ...