PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2996923-4 1985 This hypothesis is supported by the prior observations that neutrophils are recruited in greater numbers into the lungs of smokers and that MPO (in the presence of H2O2 and chloride ion) oxidatively inactivates antiproteases of both the alveoli and the mucus-lined airways. Chlorides 173-181 myeloperoxidase Homo sapiens 140-143