No abstract available
MeSH terms
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Child, Preschool
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Humans
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Male
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Mutation
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Nevus, Epithelioid and Spindle Cell / genetics*
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Nevus, Epithelioid and Spindle Cell / pathology*
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Proto-Oncogene Proteins p21(ras) / genetics*
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Skin / cytology
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Skin Neoplasms / genetics*
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Skin Neoplasms / pathology*
Substances
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HRAS protein, human
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Proto-Oncogene Proteins p21(ras)