Not be an additional DTT in sample preparation step, making the could not liberate DNA as it should be. Which aspect of the appropriate sample dilutions of biological evidence as shown in table 2.
No addition of DTT in the process of preparation. It is impossible to liberate the DNA out as it should. The proper dilution ratios of the three biological material witness. As shown in Table 2.
No sodium DTT in preparation. Unable to release the DNA out as it should be. The dilution ratio appropriate samples of both 3 biological evidence shown as shown in Table 2.