In certain forms, the biomaterial of the invention can also be used in combination with other nutrients which support the growth of cells, e.g. eukaryotic cells such as endothelial (including non-keratinized or keratinized epithelial cells), fibroblastic cells, smooth muscle cells, cardiac muscle cells, multipotent progenitor or stem cells, pericytes, or any other suitable cell type (see, e.g. Int