Collagen fibers

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  • Important player for the regulation of gingival connective tissue homeostasis is the fibroblast, cell able to synthesize and breakdown the collagen fibers and other proteins from the ground substance. In vitro studies have shown that fibroblasts from human normal gingiva produce collagens type I and type III, while cells derived from gingiva of patients with chronic periodontitis failed to produce detectable amounts of type III collagen (Hammouda et al., 1980; Chavier et al., 1984, as cited in Bartold & Narayanan, 2006)....

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  • Tham khảo sách 'tendon injuries', y tế - sức khoẻ, y học thường thức phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • More than 200 polymers are used for electrospinning like silk fibroin (Zarkoob et al., 2004; Sukigara et al., 2003; Jin et al., 2004), collagen (Mathews et al., 2002), chitosan (Ohkawa et al., 2004), gelatin (Ma et al., 2005) etc. In the field of tissue engineering electrospinning technique is applied for the preparation of nanofiber scaffold design. The process is very versatile in terms of use of polymers, non-invasive and does not require the use of coagulation chemistry or high temperature for fiber generation.

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  • This marrow section shows the marrow cavity replaced by fibrous tissue composed of reticulin fibers and collagen. When this fibrosis is due to a primary hematologic process, it is called myelofibrosis. When the fibrosis is secondary to a tumor or a granulomatous process, it is called myelophthisis. Diagnosis While the clinical picture described above is characteristic of chronic IMF, all of the clinical features described can also be observed in PV or CML.

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  • Chapter 40 - Basic principles of animal form and function. This chapter distinguish among the following sets of terms: collagenous, elastic, and reticular fibers; regulator and conformer; positive and negative feedback; basal and standard metabolic rates; torpor, hibernation, estivation, and daily torpor. This chapter also relate structure with function and identify diagrams of the following animal tissues: epithelial, connective tissue (six types), muscle tissue (three types), and nervous tissue.

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