( HUMAN ( ( CELLS ( ( ( ( In humans ) ( there ( are ( ( 23 pairs ) ( of chromosomes ) ) ) ) ) and ) ( these ( are ( further ( divided ( into ( ( 22 pairs ) ( of ( ( autosomes , ) ( which ( are ( ( numbered 1 ) ( through 22 ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP HUMAN)) (VP (VBZ CELLS) (SBAR (S (S (PP (IN In) (NP (NNS humans))) (NP (EX there)) (VP (VBP are) (NP (NP (CD 23) (NNS pairs)) (PP (IN of) (NP (NNS chromosomes)))))) (CC and) (S (NP (DT these)) (VP (VBP are) (VP (RBR further) (VBN divided) (PP (IN into) (NP (NP (CD 22) (NNS pairs)) (PP (IN of) (NP (NP (NNS autosomes)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (VP (VBN numbered) (NP (CD 1)) (PP (IN through) (NP (CD 22))))))))))))))))) (. .)))
HUMAN CELLS In humans there are 23 pairs of chromosomes and these are further divided into 22 pairs of autosomes, which are numbered 1 through 22.
(ROOT (S (NP (DT A) (JJ normal) (JJ human) (NN liver) (NN cell)) (VP (VBZ has) (NP (NP (CD 23) (NNS pairs)) (PP (IN of) (NP (NNS chromosomes))))) (. .)))