Human Embryonic Kidney (HEK) cells are derived from the kidneys of human embryos, typically obtained during the first trimester of pregnancy. These cells are often used in scientific research due to their ability to grow and divide rapidly in laboratory conditions. HEK cells are particularly valuable for studying cellular processes, drug development, and gene expression. Researchers frequently use HEK293 cells, a specific line of HEK cells, for various applications, including the production of recombinant proteins and the study of viral infections. Their versatility and ease of manipulation make them a popular choice in molecular biology and biotechnology fields.