What does HEK stand for?

Heavy Enamel Single Cellophane - Wire insulation (AAG)

Hemingway, SC - Location identifier - FAA (FAAL)

Heptachlor Epoxide Ketone (SAUS)

Heritage Boat Works, Pownal, ME - Manufacturer code for watercraft hull identification number (USCG)

Herki - Language code (ETLW)

Human Embryo Kinase - Medicine (DMAA)

Human Embryonic Kidney - Type of cell line