NANCY KEDERSHA / SCIENCE PHOTO LIBRARY NANCY KEDERSHA / SCIENCE PHOTO LIBRARY
Osteosarcoma cells. Immunofluorescence light micrograph of human osteosarcoma cells stained to show cell proteins and organelles. These cells are stained for tubulin (green), the stress responsive protein and enzyme sirtuin 6 (SIRT6, red), and mitochondria (blue). Tubulin is the main component of microtubes, cytoskeletal structures critical to mitosis and movement. Sirtuins may function as intracellular regulatory proteins with mono-ADP-ribosyltransferase activity. Magnification: x1030 when printed at 10 centimetres wide.
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