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    Tissue expansion improvement: The role of epidermal growth factor

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    In order to achieve the most satisfactory results in tissue expansion, a cream containing human recombinant epidermal growth factor (EGF) was applied daily to the expanding skin. The capacity of EGF to stimulate tissue repair has been evaluated on expanded skin flaps, comparing surgical procedures carried out with and without EGF. The present clinical, morphological, immunohistochemical and morphometric results demonstrate that EGF used together with the tissue expander may improve skin repair after mechanical stretching

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    The use of acellular autologous skeletal muscle grafts in peripheral nerve repair: A morphometrical-morphological study

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    Alternative materials for autologous nerve grafts in peripheral nerve surgery have long been investigated. This report describes the use of acellular (freeze-thawed) autologous skeletal muscle grafts (ASMG) to bridge a 2 cm gap in the sciatic nerve of rats. Neurophysiologic and morphometric studies performed 6 weeks after surgical procedure showed for the nine treated Sprague-Dawley rats (Group A) a good axon regeneration rate, although this was lower than that for the control group (Group B), a lower Nerve Conduction Velocity (NCV) and a thinner myelin sheath than in group B (n = 9 Sprague-Dawley rats). In the latter case, complete resection of 2cm of the sciatic nerve was followed by an immediate coaptation of the proximal and distal ends
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