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
I Belong to You/How Many Ways I Belong to You/How Many Ways "I Belong to You"/"How Many Ways", alternatively "How Many Ways"/"I Belong to You" in the vinyl edition, is the fifth and final single from American R&B singer Toni Braxton's self-titled debut album, "Toni Braxton" (1993). The single was released in the United States in 1994 with both songs as double-sided songs. "I Belong to You" was written by Vassal Benford and Ronald Spearman and produced by Benford. While there was no music video for "I Belong to You", the song garnered Braxton a nomination for Best Female R&B Vocal Performance at the 1996 Grammy