( ( Persons ( Who ( Have ( Impaired ( Renal ( Function ( Amantadine Amantadine ) ) ) ) ) ) ) ( ( is ( ( excreted ( unchanged ( in ( the urine ) ) ) ) ( by ( ( ( glomerular filtration ) and ) ( tubular secretion ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Persons)) (SBAR (WHNP (WP Who)) (S (VP (VBP Have) (NP (NNP Impaired) (NNP Renal) (NNP Function) (NNP Amantadine) (NNP Amantadine)))))) (VP (VBZ is) (VP (VBN excreted) (ADJP (JJ unchanged) (PP (IN in) (NP (DT the) (NN urine)))) (PP (IN by) (NP (NP (NN glomerular) (NN filtration)) (CC and) (NP (JJ tubular) (NN secretion)))))) (. .)))
Persons Who Have Impaired Renal Function Amantadine Amantadine is excreted unchanged in the urine by glomerular filtration and tubular secretion.
(ROOT (S (NP (NP (DT The) (JJ main) (NNS functions)) (PP (IN of) (NP (NN epithelia)))) (VP (VBP are) (NP (NP (NN protection)) (PP (IN from) (NP (NP (DT the) (NN environment) (, ,) (NN coverage) (, ,) (NN secretion) (CC and) (NN excretion)) (, ,) (NP (NN absorption)) (, ,) (CC and) (NP (NN filtration)))))) (. .)))