
Human basement membrane matrix is provided, produced by a novel tumorigenic cell line, where the basement membrane can be used for the growth of a variety of cells, in culture and in vivo. Other cell lines are provided, which may serve to evaluate in vivo the response of tumorigenic cells to various agents, including basement membrane. The basement membrane finds use in allowing the growth of cells in culture and in vivo, particularly cells which are otherwise refractory to xenografting.











