passages.id: split_1_test_1680_passage
passages.type: progene_text
passages.text: To test this hypothesis , proteomic analysis of serum proteins from high - fat - fed wild - type and FABP4 / aP2 null mice revealed that the GDF-3 / Vgr-2 protein , a bone morphogenetic protein , was upregulated in C57Bl / 6J FABP4 / aP2 null mice .