HEK 293 cells HEK 293 cells Human embryonic kidney 293 cells, also often referred to as HEK 293, HEK-293, 293 cells, or less precisely as HEK cells, are a specific cell line originally derived from human embryonic kidney cells grown in tissue culture. HEK 293 cells have been widely used in cell biology research for many years, because of their reliable growth and propensity for transfection. They are also used by the biotechnology industry to produce therapeutic proteins and viruses for gene therapy. HEK 293 cells were generated in 1973 by transfection of cultures of normal human embryonic kidney cells with sheared adenovirus
How to Make a Spaceship How to Make a Spaceship How to Make a Spaceship": A Band of Renegades, An Epic Race, And the Birth of Private Spaceflight" () is a bestselling award-winning 2016 non-fiction book by journalist Julian Guthrie about the origins of the X Prize Foundation and Peter Diamandis, the first X Prize, the Ansari X Prize and Anousheh Ansari, the entrants into that suborbital spaceflight competition, and the winning team, Mojave Aerospace Ventures of Vulcan Inc., Paul G. Allen, Scaled Composites, Burt Rutan, and their platform of Tier One of SpaceShipOne and WhiteKnightOne. The book is an overview of what lead to