The standardization of methods for individualizing Cannabis sativa plants could offer new possibilities in the investigation of its illegal trade. Here we present the first nomenclature proposal for 15 cannabis STRs, which allows an initial standardization for performing comparisons between laboratories and generating genotype databases. Several alleles of the 15 STR loci have been sequenced. This has revealed that not all the STR loci are equally suitable for the individualization purposes. Moreover, several nucleotide variations have been detected both inside the repeat structure and/or in the flanking region. All the different SNPSTR haplotypes are presented and compared with the previous sequence raw data of the 15 STR loci. The SNPSTR data could considerably increase the informative value of the STRs, which could be very useful in complex cases.
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