( Theoretically ( , ( ( oxygen ( delivered ( by diffusion ) ) ) ( ( may ( ( ( ( be ( ( ( ( more available ) , ) and ) ( more ( readily off-loaded ) ) ) ) ( from ( the bloodstream ) ) ) , ) ( than ( hemoglobin-delivered oxygen ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Theoretically)) (, ,) (NP (NP (NN oxygen)) (VP (VBN delivered) (PP (IN by) (NP (NN diffusion))))) (VP (MD may) (VP (VB be) (ADJP (ADJP (RBR more) (JJ available)) (, ,) (CC and) (ADJP (RBR more) (RB readily) (JJ off-loaded))) (PP (IN from) (NP (DT the) (NN bloodstream))) (, ,) (PP (IN than) (NP (JJ hemoglobin-delivered) (NN oxygen))))) (. .)))
Theoretically, oxygen delivered by diffusion may be more available, and more readily off-loaded from the bloodstream, than hemoglobin-delivered oxygen.
(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))))) (. .)))