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  • Title: Examination of placental proteins in charge-shift immunoelectrophoresis.
    Author: Hau J, Grudzinskas JG, Teisner B, Svendsen P.
    Journal: Placenta; 1983; 4(3):291-4. PubMed ID: 6194524.
    Abstract:
    Three pregnancy-associated proteins, pregnancy-specific beta1-glycoprotein (SP-I), pregnancy-associated plasma protein A(PAPP-A), and placental lactogen (hPL) were examined by charge-shift immunoelectrophoresis. PAPP-A and hPL exhibited hydrophilic properties whereas SP-I was amphiphilic. These observations suggest that SP-I is a cell membrane protein.
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