( ( ( ( Leukocyte ( A ( white ( blood cell ) ) ) ) or ) corpuscle ) . )
(ROOT (S (VP (VP (VB Leukocyte) (NP (DT A) (JJ white) (NN blood) (NN cell))) (CC or) (VP (VB corpuscle))) (. .)))
Leukocyte A white blood cell or corpuscle.
(ROOT (S (NP (JJ Leukocytes) (NN blood) (NNS cells)) (VP (VBP are) (ADJP (JJ white))) (. .)))