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: placenta
lane 9: lung
lane 10: liver
lane 11: skeletal muscle
lane 12: kidney
lane 13: pancreas
lane 14: spleen
lane 15: thymus
lane 16: prostate
lane 17: testis
lane 18: ovary
lane 19: small intestine