(S (S (BASENP (PRP They)) (VP (VBD found) (SBAR (S (BASENP (DT the) (JJ pregnant) (NNS mice)) (VP (VP (VBN developed) (NP (BASENP (JJR smaller) (NNS lesions)) (CC and) (BASENP (JJR fewer) (JJ damaged) (NNS neurons)))) (CONJP (COMMA ,) (CC and)) (VP (VBD showed) (NP (BASENP (NNS signs)) (PP (IN of) (BASENP (JJ repaired) (NNS neurons)))))))))) (PERIOD .))