In biology, a gene is a sequence of DNA or RNA that codes for a molecule that has a function.
Ichthyosis bullosa of Siemens is a type of familial, autosomal dominant ichthyosis, a rare skin disorder.
A keratinocyte is the predominant cell type in the epidermis, the outermost layer of the skin, constituting 90% of the cells found there.
Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.
Type II keratins (or Type II cytokeratins) constitutes the Type II intermediate filaments (IFs) of the intracytoplasmatic cytoskeleton, which is present in all mammalian epithelial cells.