( Autoantibodies ( ( Antibodies ( that ( mistakenly ( attack ( host cells ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Autoantibodies)) (VP (VBZ Antibodies) (SBAR (IN that) (S (ADVP (RB mistakenly)) (VP (VBP attack) (NP (NN host) (NNS cells)))))) (. .)))
Autoantibodies Antibodies that mistakenly attack host cells.
(ROOT (S (NP (NNP Autoantibody)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT an) (NN antibody)) (SBAR (WHNP (WDT that)) (S (ADVP (RB inappropriately)) (VP (VBZ marks) (S (NP (NNS self-components)) (ADJP (RB as) (JJ foreign)))))))))) (. .)))