42 research and development in the fields of: tissue digestion; tumor tissue digestion; cell isolation, storage and or expansion or amplification; white blood cell or lymphocyte isolation, storage and or expansion or amplification; reagents for cell population expansion or amplification; reagents for expansion or amplification of white blood cells or lymphocytes; cell growth and or stimulatory factors; white blood cell or lymphocyte growth and or stimulatory factors; tumors; white blood cells; lymphocytes; medical apparatus for: collection of solid biological tissue samples or specimens, or for collection of solid biological tumor tissue samples, and or isolation of cells therefrom or isolation and storage of cells therefrom, or isolation of white blood cells or lymphocytes therefrom, or isolation and storage of white blood cells therefrom