( ( Different people ) ( ( have ( different ( immune systems ) ) ) . ) )
(ROOT (S (NP (JJ Different) (NNS people)) (VP (VBP have) (NP (JJ different) (JJ immune) (NNS systems))) (. .)))
Different people have different immune systems.
(ROOT (S (NP (DT Each) (NN lymph) (NN organ)) (VP (VBZ has) (NP (NP (DT a) (JJ different) (NN job)) (PP (IN in) (NP (DT the) (JJ immune) (NN system))))) (. .)))