PRACE DOKTORSKIE - SZWECJA 546,321 PAULSSON YLVA Positive and negative regulation of cell proliferation : a study on the action of platelet - derived factor on human fibroblasts in culture : [thesis]/ Ylva Paulsson ; Uppsjla University. - Uppsala : University, 1988. s. : il., wykr. ; 25 cm (Acta Universitatis Upsaliensis. Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine ISSN 0282-7476 ; 152) ISBN 91-554-2198-9