Canabrava, H.A.N. Freire, A.C.T. Influence of yohimbine, doxapram, 4-aminopyridine and aminophyline upon xylazine induced sedative effect in sheep. Influence of yohimbine, doxapram, 4-aminopyridine and aminophyline upon xylazine induced sedative effect in sheep. Subjects--Topical Terms: CARNEIROANESTESIAANESTESICO