( ( ( ( ( Lymphocytes ( ( The ( human body ) ) ( has ( ( as ( many ( ( as two ) trillion ) ) ) lymphocytes ) ) ) ) , ) and ) ( lymphocytes ( ( make up ) ( ( ( about 25 ) % ) ( of ( all leukocytes ) ) ) ) ) ) . )
(ROOT (S (S (ADVP (RB Lymphocytes)) (NP (DT The) (JJ human) (NN body)) (VP (VBZ has) (NP (QP (RB as) (JJ many) (IN as) (CD two) (CD trillion)) (NNS lymphocytes)))) (, ,) (CC and) (S (NP (NNS lymphocytes)) (VP (VBP make) (PRT (RP up)) (NP (NP (QP (RB about) (CD 25)) (NN %)) (PP (IN of) (NP (DT all) (NNS leukocytes)))))) (. .)))
Lymphocytes   The human body has as many as two trillion lymphocytes, and lymphocytes make up about 25% of all  leukocytes.
(ROOT (S (S (NP (DT The) (JJ human) (NN body)) (VP (VBZ has) (NP (QP (RB as) (JJ many) (IN as) (CD two) (CD trillion)) (NNS lymphocytes)))) (, ,) (CC and) (S (NP (NNS lymphocytes)) (VP (VBP make) (PRT (RP up)) (NP (NP (QP (RB about) (CD 25)) (NN %)) (PP (IN of) (NP (NP (DT all)) (PP (IN of) (NP (NNS leukocytes)))))))) (. .)))