( ( the ( bottom layer ) ) ( of ( ( the ( skin 's ) ) epidermis ) ) )
(ROOT (NP (NP (DT the) (JJ bottom) (NN layer)) (PP (IN of) (NP (NP (DT the) (NN skin) (POS 's)) (NNS epidermis)))))
the bottom layer of the skin's epidermis
(ROOT (S (NP (NNS Melanocytes)) (VP (VBP are) (VP (VBN located) (PP (IN in) (NP (NP (DT the) (JJ bottom) (NN layer)) (PP (IN of) (NP (DT the) (NNS epidermis))))))) (. .)))