lines of Blaschko
Pronunciation: blahs′kō
Definition: a pattern of distribution of skin lesions or pigmentary anomalies; linear on the extremities, S-shaped curves on the abdomen, and V-shaped on the back; thought to result from genetic mosaicism (q.v.) and the interplay of transverse clonal proliferation and longitudinal growth and flexion of the embryo.
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Examples: glitazone, GI cocktail, etc.
