Tissue expression profiling of cTGFBR2 transcript isoforms in various chicken tissues. (A) Schematic locations of qRT-PCR primers used in the tissue expression profiling of cTGFBR2 transcript isoforms. (B) Expression profiling of the 3 cTGFBR2 transcript isoforms in various tissues of the 4-wk-old AA chickens. (C) Expression comparison of the 3 cTGFBR2 transcript isoforms in various tissues of fat and lean lines of NEAUHLF. Abbreviations: AF, abdominal fat; SF, subcutaneous fat; GF, gizzard fat; H, heart; Li, liver; Sp, spleen; Lu, lung; K, kidney; G, gizzard; P, proventriculus; Pa, pancreas; M, muscle.