{
    "PMID": "10049358",
    "TI": "Bmp4 is required for the generation of primordial germ cells in the mouse embryo.",
    "JT": "Genes & development",
    "BTI": "",
    "DP": "1999-02-15",
    "AU": "Lawson K A, Dunn N R, Roelen B A, Zeinstra L M, Davis A M, Wright C V, Korving J P, Hogan B L"
}