The hypodermis is the innermost and thickest layer of the skin. It invaginates into the dermis and is attached to the latter, immediately above it, by collagen and elastin fibres. It is essentially composed of a type of cells specialised in accumulating and storing fats, known as adipocytes.
Fatal familial insomnia Fatal familial insomnia (FFI) is a very rare, autosomal dominant inherited, disease of the brain. It is caused by a mutation in a protein called prion protein (PrP): asparagine-178 is replaced by aspartic acid.
Fatal familial insomnia: Introduction. A rare brain disease where the patient loses the ability to fall asleep. Prognosis is poor and the inability to sleep is gradually degenerative and eventually fatal. ...more Â». Symptoms of Fatal familial insomnia. Click to Check. Insomnia.