mRNA expression of ABCC6 and its pseudogenes ABCC6P1 and ABCC6P2 in a variety of human tissues. Relative normalized transcription of ABCC6 (A), ABCC6P1 (B) and ABCC6P2 (C) in 39 human tissues. The tissue with the highest expression (liver pool) was used as reference tissue (100%). (D) Expression of ABCC6 relative to ABCC6P1 and ABCC6P2. Ratios are shown as a logarithmic scale (base 2).