“…The contribution of the DX a DNA sequences to the low-level hybridization signal that is sometimes detected in the 1.1 probe sequence of the DQ a amplitype typing strip has been investigated (790). PCR of the D17S30 locus was not recommended for forensic practice (791). A contaminant likely to be the hemeblood protein complex has been studied with regard to its inhibition of PCR (792).…”