Effects of hypoxia on the response of human umbilical artery (hua) strips to 5- ydroxytryptamine (5-ht): role of prostaglandin 'F IND.2 ALFA' (pg'F IND.2 ALFA') - De Moraes, S; Carvalho, A J C; Cavalcante, T M; Mathias, Roberto Simão (Reuniao Anual da Federacao de Sociedades de Biologia Experimental, 1995)