Complex sentence: The British data base for STR loci identification is The National DNA Data Base (NDNAD) compared to the American CODIS system the British system uses 10 loci not 13 loci.
Split into simpler sentences: The British data base for STR loci identification is the UK National DNA Database (NDNAD). Compared to the American CODIS system the British system uses 10 loci not 13 loci.