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 Wings Are Attached to the Backs of Angels the animation category at the Chicago International Film Festival. How Wings Are Attached to the Backs of Angels How Wings Are Attached to the Backs of Angels is a 1996 animated short by Canadian animator Craig Welch, produced by the National Film Board of Canada (NFB). While Welch's first film with the NFB, 1992's "No Problem", was influenced by the comic style of NFB animators Cordell Barker and Richard Condie, "How Wings Are Attached to the Backs of Angels" marked a distinct change in artistic direction, exploring such darker themes as death and desire, in a style that has been