( ( Autoantibodies ( In ( some ( autoimmune diseases ) ) ) ) ( , ( ( B cells ) ( mistakenly ( ( make ( antibodies ( against ( tissues ( of ( ( ( the body ) ( -LRB- ( ( self antigens ) -RRB- ) ) ) ( instead ( of ( foreign antigens ) ) ) ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (PP (ADVP (RB Autoantibodies)) (IN In) (NP (DT some) (JJ autoimmune) (NNS diseases))) (, ,) (NP (NNP B) (NNS cells)) (ADVP (RB mistakenly)) (VP (VBP make) (NP (NP (NNS antibodies)) (PP (IN against) (NP (NP (NNS tissues)) (PP (IN of) (NP (NP (NP (DT the) (NN body)) (PRN (-LRB- -LRB-) (NP (NN self) (NNS antigens)) (-RRB- -RRB-))) (PP (RB instead) (IN of) (NP (JJ foreign) (NNS antigens))))))))) (. .)))
Autoantibodies In some autoimmune diseases, B cells mistakenly make antibodies against tissues of the body (self antigens) instead of foreign antigens.
(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)))))))))) (. .)))