A blood donation occurs when a healthy person voluntarily has blood drawn. The blood is used for transfusions or made into medications by a process called fractionation.
PPT on Blood Donation Can be Found on
http://pptsearchengine.in/pptsearchengine?q=ppt+on+blood+donation&page=1
http://www.filedigg.com/fileSearch?q=ppt+on+big+baang+theory&view_type=singleview&site=site&page=1&as_filetype=ppt
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