1. True or false? Hair and nails are formed of exactly the same material: keratin. 2. True or false? Langerhans histiocytosis arises as a malignancy of cutaneous dendritic cells. 3. True or false? A...

1. True or false? Hair and nails are formed of exactly the same material: keratin.

2. True or false? Langerhans histiocytosis arises as a malignancy of cutaneous dendritic cells.

3. True or false? A papule is a small, solid, raised lesion less than 0.5 cm in diameter.