( ( Autoantibodies ( against ( ( ( ( ( ( both ( striated ( muscle proteins ) ) ) , ) ( particularly titin ) ) , ) and ) ( the ( acetylcholine receptor ) ) ) ) ) ( ( are ( ( a hallmark ) ( of ( ( thymoma - ) ( associated ( myasthenia gravis ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Autoantibodies)) (PP (IN against) (NP (NP (DT both) (JJ striated) (NN muscle) (NNS proteins)) (, ,) (NP (RB particularly) (NN titin)) (, ,) (CC and) (NP (DT the) (JJ acetylcholine) (NN receptor))))) (VP (VBP are) (NP (NP (DT a) (NN hallmark)) (PP (IN of) (NP (NP (NN thymoma)) (: -) (VP (VBN associated) (NP (NN myasthenia) (NNS gravis))))))) (. .)))
Autoantibodies against both striated muscle proteins, particularly titin, and the acetylcholine receptor are a hallmark of thymoma- associated myasthenia gravis.
(ROOT (S (NP (DT The) (ADJP (JJS largest) (VBN known)) (NNS proteins)) (VP (VBP are) (ADJP (JJ titins))) (. .)))