deletion
(deh-LEE-shun)
A type of genetic change that involves the absence of a segment of DNA. It may be as small as a single base but can vary significantly in size.
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.