![bpod-mrc: 25 January 2015 Skeleton Crew Inside this femur [thigh bone] lies a type of cell that once helped to build the skeleton in the womb, and could be reawakened to help ageing joints. Osteochondroreticular (OCR) stem cells, labelled with a red](https://64.media.tumblr.com/26775876b902fc3c12b94bea11eaa541/tumblr_nimmdzxyyx1rvcmm7o1_500.jpg)
published on: 2015-01-26 06:43:27
astronomicalwonders: The Egg Nebula - CRL 2688 Around 3000 light-years
I Love Charts
newyorker: A cartoon by Roz Chast, from this week’s issue
astronomicalwonders: The Syrtis Major Volcanic Province - The
usnatarchives: Wednesday, January 28, at noonWilliam G. McGowan
coisasdetere: Saint-émilion, Aquitaine, France.