WBC 12, Hct 41.
 WBC levels are low
(ROOT (NP (NP (NP (NNP WBC) (CD 12)) (, ,) (NP (NN Hct) (CD 41))) (. .)))
(ROOT (S (NP (NN WBC) (NNS levels)) (VP (VBP are) (ADJP (JJ low)))))
( ( ( ( WBC 12 ) , ) ( Hct 41 ) ) . )
( ( WBC levels ) ( are low ) )