To obtain stem cells from the bone marrow, a [url=http://pielgrzymkrasnostawski.pl/index.php/component/k2/item/46?start=0]http://pielgrzymkrasnostawski.pl/index.php/component/k2/item/46?start=0[/url] needle is inserted into the iliac crest of the pelvic bone to extract stem cells.