Abstract: The present disclosure provides a medical grade nanofibrillar cellulose hydrogel comprising plant-based chemically and enzymatically unmodified nanofibrillar cellulose hydrogel having a concentration of the nanofibrillar cellulose in the range of 1.4-3.4% by weight, the nanofibrillar cellulose having a number-average diameter of fibrils and/or fibril bundles of 100 nm or less, and a storage modulus in the range of 1-35 Pa. The present disclosure also provides a method for treating a subject in need of treatment of body with implantable material, and a method for manufacturing medical grade nanofibrillar cellulose hydrogel.

Abstract: The present disclosure provides a bioreactor for extracting cell-derived products from cultured cells, the bioreactor comprising a container, an inlet for inputting cell culture medium into the container, an outlet for outputting cell culture medium comprising cell-derived products from the container, the container comprising, or being connected to, a compartment comprising nanostructured cellulose configured to receive cells, said compartment comprising a first separating surface separating the nanostructured cellulose from the outlet and allowing cell culture medium comprising cell-derived products to pass through the first separating surface. The present disclosure also provides a method for separating cell-derived products from cultured cells and a nanostructured cellulose product.

Abstract: The present application provides a method for preparing transplantable cell preparation, the method comprising culturing eukaryotic cells at conditions allowing the cells to coalesce and form cell aggregates, providing the cell aggregates in a nanofibrillar cellulose hydrogel to obtain a transplantable cell composition comprising eukaryotic cells in a nanofibrillar cellulose hydrogel matrix, and a transplantable cell preparation. The present application also provides the transplantable cell composition for use in a therapeutic method, and to use of nanofibrillar cellulose for preparing the transplantable cell composition.