title: Studies in lead poisoning. I. Microanalysis of erythrocyte protoporphyrin levels by spectrophotometry in the detection of chronic lead intoxication in the subclinical range.
mesh_terms: D000818:Animals; D002648:Child; D002908:Chronic Disease; D004912:Erythrocytes / Q000032:analysis*; D005069:Evaluation Studies as Topic; D006801:Humans; D007854:Lead / Q000097:blood; D007855:Lead Poisoning / Q000097:blood* / Q000175:diagnosis; D008722:Methods; D008832:Microchemistry; D011166:Porphyrins / Q000097:blood*; D051381:Rats; D013050:Spectrometry, Fluorescence
chemical_list: D011166:Porphyrins; D007854:Lead