mucus
(MYOO-kus)
A thick, slippery fluid made by the membranes that line certain organs and body cavities, such as the nose, mouth, throat, lungs, stomach, and vagina.
The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.
Updates regarding government operating status and resumption of normal operations can be found at opm.gov.