Description

keratin 18, which belongs to the type A (acidic) subfamily of low molecular weight keratins exists in combination with keratin 8. It was reported that tissues from gastrointestinal tract are positive for both keratin 8 and 18 but do not contain keratin 14. Tissues from gastrointestinal tract, respiratory tract and urogenital tract, as well as endocrine and exocrine tissues and mesothelial cells are positive for keratin 18.