passages.id: split_8_test_2241_passage
passages.type: progene_text
passages.text: The THRP mRNA content of cerebral tissue ( 1340.0 +/- 126.5 arbitrary units ) was 2.3 - fold higher than Abi - 2 mRNA ( 581.3 + / - 73.7 ) , while the ratio of hepatic content of THRP mRNA ( 209.0 + / - 49.1 ) to hepatic Abi-2 mRNA ( 2923.0 + / - 378.7 ) was only 0.07 ( P < 0.004 ) .