Drug – bio-affecting and body treating compositions – Whole live micro-organism – cell – or virus containing – Animal or plant cell
Reexamination Certificate
2006-09-05
2006-09-05
Hayes, Robert C. (Department: 1647)
Drug, bio-affecting and body treating compositions
Whole live micro-organism, cell, or virus containing
Animal or plant cell
C435S368000, C435S379000, C435S382000
Reexamination Certificate
active
07101545
ABSTRACT:
There is provided a method for growing human intervertebral cells. Disc tissue is surgically removed from a normal disc of a patient, the cells expanded by feeding with a cell stimulant such as a growth factor, or a cytokine or a bioactive agent to form monolayer primary cell cultures on a plastic mesh such as a nylon mesh. In the case of a growth factor, fetal bovine serum is preferred as it improves cell proliferation and production of appropriate extracellular matrix components. In another aspect of this invention, the monolayer primary cell cultures are seeded in alginate or agarose and fed again with the cell stimulant until three-dimensional cell cultures are formed. The cells are recovered from the alginate or agarose or from monolayer cultures. Re-implantation is carried out using bioresorbable carriers or cell suspensions.
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Gruber Helen Elizabeth
Hanley, Jr. Edward Nathaniel
Alston & Bird LLP
Carolinas Medical Center
Charlotte-Mecklenburg Hospital Authority
Hayes Robert C.
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