( ( ( The cells ) ( in animals ) ) ( ( ( ( have ( a nucleus ) ) , ) ( while ( ( plant cells ) ( ( do not ) ( have ( a nucleus ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS cells)) (PP (IN in) (NP (NNS animals)))) (VP (VBP have) (NP (DT a) (NN nucleus)) (, ,) (SBAR (IN while) (S (NP (NN plant) (NNS cells)) (VP (VBP do) (RB not) (VP (VB have) (NP (DT a) (NN nucleus))))))) (. .)))
The cells in animals have a nucleus, while plant cells do not have a nucleus.
(ROOT (S (NP (NP (DT The) (NNS cells)) (PP (IN of) (NP (DT all) (NNS protists)))) (VP (VBP have) (NP (DT a) (NN nucleus))) (. .)))