human pigmentation
1.Methods 199 workers exposed to ACN and 43 control workers were investigated by questionnaire including cognitive function and aging sign of human body such as canities,pigmentation etc.
2.A member of a major human racial division traditionally distinguished by physical characteristics such as brown to black pigmentation and often tightly curled hair, especially one of various peoples of sub-Saharan Africa.
3.Of, relating to, or being a major human racial classification traditionally distinguished by physical characteristics such as brown to black pigmentation and often tightly curled hair and including peoples indigenous to sub-Saharan Africa. No longer in scientific use.
4.Lozumi K,Hoganson GE,Pennella R, et al. Role of tyrosinase as the determinant of pigmentation in cultured human melanocytes [J ]. J Invest Dermatol 1993,100(6) :806.
