A549 cells are adenocarcinomic human alveolar basal epithelial cells, and constitute a cell line that was first developed in 1972 by D. J. Giard, et al. through the removal and culturing of cancerous lung tissue in the explanted tumor of a 58-year-old caucasian male.[1] The cells are used as models for the study of lung cancer and the development of drug therapies against it.[2][3]
foster
was invoked but never defined (see the help page).