bovine cartilage
Cartilage extracted from various parts of a cow and is proposed to stimulate the immune system and inhibit tumor cell growth. It was used in the 1950s and 60s to enhance wound healing. (NCI)
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.