Table 4. Tyrosinase mRNA (Ty-mRNA) detection results via reverse transcriptase polymerase chain reaction (RT-PCR), from receptor skin biopsies before and after curettage for control areas (among 20 curetted areas).

	Positive Ty-mRNA	Negative Ty-mRNA
Before grafting	1	19
After grafting	17 (85.0%)	3 (15.0%)

Conversion percentage = 84.2%.