{\rtf1\ansi\deff0\deftab360 {\fonttbl {\f0\fswiss\fcharset0 Arial} {\f1\froman\fcharset0 Times New Roman} {\f2\fswiss\fcharset0 Verdana} {\f3\froman\fcharset2 Symbol} } {\colortbl; \red0\green0\blue0; } {\info {\author Biblio}{\operator }{\title Biblio RTF Export}} \f1\fs24 \paperw11907\paperh16839 \pgncont\pgndec\pgnstarts1\pgnrestart Houghton E, Holtan D, Grainger L, Voller BE, Rossdale PD, Ousey JC.? 1991.??Plasma progestagen concentrations in the normal and dysmature newborn foal.. Journal of reproduction and fertility. Supplement. 44:609-17.\par \par }