Researchers are looking for a non-toxic drug that increases melanin (skin pigmentation) as a way to prevent melanoma (a type of skin cancer). To test their drug, they injected it into a green lizards, which turned entirely black within 1 minute and remained that way for 24 hours.

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Researchers are looking for a non-toxic drug that increases melanin (skin pigmentation) as a way to prevent melanoma (a type of skin cancer). To test their drug, they injected it into a green lizards, which turned entirely black within 1 minute and remained that way for 24 hours.