plasma proteins were separated by chromatography on sp-sephadex c-50 , and from its chromatographic behaviour and progesterone-binding property evidence was obtained for an anionic , high-affinity pbg in the plasma of all the animals studied during gestation : electrophoretic mobility of sp-sephadex-purified pbg applied to 7 % polyacrylamide gels differed between species , being highest for casiragua pbg and lowest for guinea-pig pbg .
C0033308
progesterone
C0032961
gestation