the purpose of this investigation was to determine the relative contributions of trophoblast cells in each of these regions to the expression of placental lactogen-ii ( pl-ii ) and prl-like protein-a ( plp-a ) during development , mrna expression was estimated by northern blot analysis , whereas , protein expression was estimated by electrophoresis , immunoblotting , and immunocytochemical analyses .
C1515670
mrna expression
C1171362
protein expression