The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years. Tissue transplantation is the transfer of essential tissue from one location to another with in the same individual or from one person to the other for the purpose of replacing patients damaged tissue or sometimes absent tissue. Many diseases which will not be readily curable by any existing therapies can be cured by this method of this tissue transplantation technique. There are different types of tissue transplantations and the most commonly transplanted tissues include cornea, skin, heart valves, nerves and veins. Tissue transplantation technique can be mainly divided into two types called allograft and autograft transplantations. Autograft transplantation is a transplantation which involves the transfer of particular tissue from one place to other within the same body, whereas allograft transplantation is a transplantation technique which is performed between two different individuals or between two species.
Last date updated on July, 2014