RNA / Immunohistochemistry / Confocal Microscopy / DNA / Humans / Child / Female / Male / Infant / American / Skin / Pedigree / Family Health / Calcinosis / Human Fibroblasts / Diphosphates / Extracellular Space / Child / Female / Male / Infant / American / Skin / Pedigree / Family Health / Calcinosis / Human Fibroblasts / Diphosphates / Extracellular Space