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Collagen physical characteristics

Today collagen as a hemostatic agent exists in the microfibrillar form, as a nonwoven fleece or as a sponge produced by the technique of freeze-drying. The physical structure of a sponge offered as a sheet has certain additional characteristics to serve as an effective hemostatic device with excellent handling. [Pg.365]

Histologically visible fibers of collagenous nature are complex objects (see Fig. 1). They may, on occasion, be expected to show chemical and physical properties characteristic of any of the major connective tissue components, even though they may most often resemble collagen predominantly. [Pg.76]

There are two aspects to the identification problem (a) in the first, one is concerned with determining the characteristics of collagens which are found as components somewhere within massive samples, possibly originating from different tissues but (b) one might also desire to localize and distinguish the several components of a single tissue. The second problem, which involves employing the physical methods discussed above as adjuncts to histochemical studies, is technically more difficult than the first. [Pg.84]

Apart from polyplexes, various nanoscale assemblies of cationic polysaccharides are also proposed to promote the surface-mediated delivery of DNA to cells. These approaches are classified into one of two broad categories (i) methods based upon the physical adsorption of preformed polyplex on polymeric surfaces like PLGA or collagen films and these polyplex functionalized films promoted surface-mediated transfection of cells in vitro and in vivof (ii) methods for layer-by-layer adsorption of DNA and cationic polymers on surfaces to fabricate multilayered thin films. Recently, degradable carbohydrate-based nanogels were proposed for codelivery of pDNA and therapeutic proteins. These systems were designed to possess stimuli-sensitive characteristics where the temperature-sensitive property of nanogels allowed the facile encapsulation of biomaterials, while... [Pg.230]


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Collagen characteristics

Physical characteristics

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