He told the talk show host that he had vitiligo, a disorder that destroyed his skin pigmentation.
The transposons jump from place to place as the kernels reproduce, creating differences in genes for pigmentation.
Some people with this disorder never experience changes in pigmentation, but others begin to produce melanin during childhood and adolescence.
Klein said he treated Jackson's vitiligo with a cream that eventually bleached Jackson's darker pigmentation to even out his skin color.
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"We must reject the notion that demography is destiny, the pathetic and simplistic notion that skin pigmentation dictates voter behaviour, " he said.
Later, he would blame his changing appearance on a skin pigmentation deficiency.
Current projects sponsored by 23andMe include studies on a broad range of traits and behaviors, such as ancestral origins, pigmentation, optimism and handedness.
Antioxidants applied topically have been shown to protect against sun damage that can cause wrinkles and changes in skin pigmentation, Dr. Alster says.
Was Van Espleghem documenting ritual scarification, or perhaps a pigmentation disorder?
It is thought that the pigmentation on a part of the calfskin manuscript has been affected, and that it could have been due to vibration on the flight.
Leucism is a reduction in the pigmentation of the skin.
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Individuals within the various species of whales and dolphins can be distinguished by nicks or other markings on their fins and tails, or by pigmentation differences revealed by sharp photographs.
Jackson had "vitiligo, a skin pigmentation disease, " Rogers said.
If the environment being spread through is an animal embryo and the reagents are hormones that trigger the differentiation of the body's pigment-producing cells, the upshot is a distinct pattern of pigmentation.
"Some could have been bitten by insects such as mosquitoes, and in other cases there were moles, or skin pigmentation, and we couldn't find a needle puncture wound, " said Wang, speaking at the news conference.
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