Ferruginous body counts in sputum as an index of past exposure to mineral fibres

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      <subfield code="a">Ferruginous body counts in sputum as an index of past exposure to mineral fibres</subfield>
      <subfield code="c">J.C. McDonald... [et al.]</subfield>
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      <subfield code="a">Previous work by our group among vermiculite miners exposed to fibrous tremolite demonstrated that asbestos body counts in sputum closely reflected intensity and duration of past exposure. In the present project sputum samples from nearly 600 volunteers fromm 11 cohorts of workers exposed to asbestos and other mineral fibres were found to contain much lower numbers of asbestos bodies than had been observed in vermiculite workers and these counts did not realiably reflect past levels of exposure</subfield>
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      <subfield code="t">The Annals of occupational hygiene</subfield>
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      <subfield code="g">nº 3, June 1992 ; p. 271-282</subfield>
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