Expression of selected exon trapped sequences (ETS) on a bovine multi-tissue panel analyzed by RT-PCR. A, C, D: examples for different tissue-specific expression, B: example for ubiquitous tissue expression. E: expression of GAPDH as control house-keeping gene. Sequences analyzed are given right to each electrophoresis profile. L: liver, K: kidney, I: small intestine, IF: intestinal fat, SF: subcutaneous fat, M: skeletal muscle, MG: mammary gland, T: thyroid gland, P: pituitary gland, BT: bovine genomic DNA, N: no template control.