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
Over There (Fringe) traveling to the Other Side. The show had been developing a parallel universe storyline since its conception, but "Over There" marked the longest time spent in that world thus far. Pinker explained the idea of two worlds: "One of the big themes of the show is how small choices that you make define you as a person and can change your life in large ways down the line." Wyman said that the parallel universe "is a reminder to our viewers that your life is what your choices are." The two began discussing details about the Other Side early on, especially