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Egyptian Journal of Forensic Sciences
Fig. 3 | Egyptian Journal of Forensic Sciences

Fig. 3

From: Species DNA-based identification for detection of processed meat adulteration: is there a role of human short tandem repeats (STRs)?

Fig. 3

Different PCR products representing human origin of adulteration in different beef meat products. Lane M is 25–500 bp ladder or size marker. Lane 1 is for positive control of TP0X short tandem repeat; lane 2 is a hand-made kofta sample with positive TP0X. Lane 3 is a positive control sample amplified with D18S51 primers, and lane 4 is a positively amplified same kofta sample. Lanes 5 and 6 were another negative kofta sample for both loci. Lanes 7, 8, 9 and 10 were negative amplification sausage samples for the two primer pairs. Lanes 11 and 12 were beef burger negative sample for both loci and lanes 13 and 14 represented negative luncheon sample for the two loci. −C (lane 15) and −C (lane 16) are negative controls for TP0X and D8S51, respectively. Positive result was indicated by one or two bands of 216–264 bp size range for TP0X and 262–349 bp size range for D18S51

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