( ( Study participants ) ( ( ( were then ) ( ( tested ( for ( levels ( of ( three ( different chemicals ) ) ) ) ) ) ( in ( ( the body ) ( that ( indicate ( lipid peroxidation ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Study) (NNS participants)) (VP (VBD were) (ADVP (RB then)) (VP (VBN tested) (PP (IN for) (NP (NP (NNS levels)) (PP (IN of) (NP (CD three) (JJ different) (NNS chemicals))))) (PP (IN in) (NP (NP (DT the) (NN body)) (SBAR (WHNP (WDT that)) (S (VP (VBP indicate) (NP (NN lipid) (NN peroxidation))))))))) (. .)))
Study participants were then tested for levels of three different chemicals in the body that indicate lipid peroxidation.
(ROOT (S (NP (NNS Lipids)) (VP (VBP are) (ADJP (JJ available) (PP (TO to) (NP (NP (DT the) (NN body)) (PP (IN from) (NP (CD three) (NNS sources))))))) (. .)))