( ( ( Diffusion tests ) ( -LRB- ( ( ( ( ( ( abbreviated DL ) , ) ( ( CO or ) TL ) ) , ) CO ) -RRB- ) ) ) ( ( determine ( ( how well ) ( ( your lungs ) ( ( ( take ( in air ) ) and ) ( move ( ( the oxygen ) ( ( contained ( in ( this air ) ) ) ( into ( the bloodstream ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NN Diffusion) (NNS tests)) (PRN (-LRB- -LRB-) (NP (NNP abbreviated) (NNP DL)) (, ,) (NP (NNP CO) (CC or) (NNP TL)) (, ,) (NP (NNP CO)) (-RRB- -RRB-))) (VP (VBP determine) (SBAR (WHADVP (WRB how) (RB well)) (S (NP (PRP$ your) (NNS lungs)) (VP (VP (VB take) (PP (IN in) (NP (NN air)))) (CC and) (VP (VB move) (NP (NP (DT the) (NN oxygen)) (VP (VBN contained) (PP (IN in) (NP (DT this) (NN air))) (PP (IN into) (NP (DT the) (NN bloodstream)))))))))) (. .)))
Diffusion tests (abbreviated DL,CO or TL,CO) determine how well your lungs take in air and move the oxygen contained in this air into the bloodstream.
(ROOT (S (NP (NNP Oxygen)) (VP (VBZ is) (VP (VBN transferred) (PP (IN into) (NP (DT the) (NN bloodstream))) (PP (IN by) (NP (JJ simple) (NN diffusion))))) (. .)))