Influence of Echinacea purpurea intake during pregnancy on fetal growth and tissue angiogenic activity - Barcz, E; Sommer, E; Nartowska, J; Bałan, B J; Chorostowska-Wynimko, J; Skopińska-Róźewska, E W (Folia Histochem Cytobiol, 2007)