( ( Unmetabolized oseltamivir ) ( also ( ( is ( ( excreted ( in ( the urine ) ) ) ( by ( ( ( glomerular filtration ) and ) ( ( tubular secretion ) ( -LRB- ( 238 -RRB- ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (JJ Unmetabolized) (NN oseltamivir)) (ADVP (RB also)) (VP (VBZ is) (VP (VBN excreted) (PP (IN in) (NP (DT the) (NN urine))) (PP (IN by) (NP (NP (NN glomerular) (NN filtration)) (CC and) (NP (NP (JJ tubular) (NN secretion)) (PRN (-LRB- -LRB-) (NP (CD 238)) (-RRB- -RRB-))))))) (. .)))
Unmetabolized oseltamivir also is excreted in the urine by glomerular filtration and tubular secretion ( 238 ).
(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)))))) (. .)))