TABLE 1.

Melanocyte markers studied (summary of results with skin phototypes 2–3)

Marker	day 0	day 1	week1	week 2	week 3	week5	≥ 9 months
MITF1	+	++	+++	++	+	+	+
TYR1	+	+	++	+++	++	++	+
Pmel171	+	+	++	+++	++	++	+
MART11	+	+	++	+++	++	++	+
Melanin 2	+	+	++	++	++	++	+
Melanin 3	+	+	+	+	++	++	+
Melanosome redistribution	+	+	++	+	+	+	+
Melanocyte density 4	+	+	+	+	+	++	+
Visible skin color5	+	++	+++	+++	+++	+++	+

¹assessed as intensity of staining.

²Melanin content as assessed by immunohistochemistry of Fontana Masson stain.

³Melanin content as assessed by chemical analysis.

⁴comparable results were obtained with stains for TYR, MART1, Pmel 17 and MITF.

⁵measured as reflectance.