hed Sep. 10, 1986, which discloses a slow-release composition of a carbohydrate polymer such as a cellulose and a protein such as a growth factor; GB Pat. No. 2,160,528 granted Mar. 9, 1988, describing a formulation of a bioactive protein and a polysaccharide; and EP 193,372 published Sep. 3, 1986, disclosing an intranasally applicable powdery pharmaceutical composition containing an active polype