( ( A ( human cell ) ) ( ( contains ( ( many thousands ) ( of ( ( different genes ) ( in ( its nucleus ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ human) (NN cell)) (VP (VBZ contains) (NP (NP (JJ many) (NNS thousands)) (PP (IN of) (NP (NP (JJ different) (NNS genes)) (PP (IN in) (NP (PRP$ its) (NN nucleus))))))) (. .)))
A human cell contains many thousands of different genes in its nucleus.
(ROOT (S (NP (DT A) (JJ single) (JJ human) (NN body) (NN cell)) (ADVP (RB typically)) (VP (VBZ contains) (NP (NP (NNS thousands)) (PP (IN of) (NP (NNS genes))))) (. .)))
A single human body cell typically contains thousands of genes.