PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24258016-6 1985 It is suggested that selenium protects essential thiol groups in ALAD that are otherwise blocked by invading tin; in contrast, selenium, under similar conditions, does not prevent interactions of lead with enzyme thiol groups. Sulfhydryl Compounds 49-54 aminolevulinate, delta-, dehydratase Mus musculus 65-69