Journal
BIOMATERIALS
Volume 24, Issue 24, Pages 4337-4351Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0142-9612(03)00340-5
Keywords
alginate; chitosan; hyaluronic acid; PEG; drug delivery
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Polymer scaffolds have many different functions in the field of tissue engineering. They are applied as space filling agents, as delivery vehicles for bioactive molecules, and as three-dimensional structures that organize cells and present stimuli to direct the formation of a desired tissue. Much of the success of scaffolds in these roles hinges on finding an appropriate material to address the critical physical, mass transport, and biological design variables inherent to each application. Hydrogels are an appealing scaffold material because they are structurally similar to the extracellular matrix of many tissues, can often be processed under relatively mild conditions, and may be delivered in a minimally invasive manner. Consequently, hydrogels have been utilized as scaffold materials for drug and growth factor delivery, engineering tissue replacements, and a variety of other applications. (C) 2003 Elsevier Ltd. All rights reserved.
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