lanes 1 - 5: amplified from serial tenfold dilutions
of plasmid DNA template (from 0.1 fg to 1 pg, respectively).
lane 6: heart
lane 7: brain
lane 8: lung
lane 9: liver
lane 10: skeletal muscle
lane 11: kidney
lane 12: pancreas
lane 13: spleen
lane 14: testis
lane 15: ovary