We show that if A and  are automorphic via 8 then the structures SR(A) and SR( Â) are 13-isomorphic via an isomorphism 9 induced by 8. Then we use this result to classify completely the orbits of hhsimple sets.

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Aniline and o-, m-, and /Moluidine, which are representative of aro matic amines in cigarette smoke, were identified and quantified in human urine. Smokers excreted 3.1 ±2.6 «¿g/24 h of aniline and 6.3 ±3.7 ¿ig/ 24 h of o-toluidine (n = 16). Nonsmokers excreted 2.8 ±2.5 Mg/24 h of aniline and 4.1 ±3.2 un; 24 h of o-toluidine (n = 12). Metaand /»toluidine were detected in the urine of 2 ...

Page 3. It is not entirely clear what causal model the authors have in mind, and specifically whether they consider smoking and air pollution as mediators or confounders of the association between SES and respiratory health. In paragraph two, page 1, they imply mediation (â##â#¦strongly influenced by SES..â##) but in paragraph three, confounding is implied (â##....competing factorsâ#¦â##). This...

MAT-B1 and M A I -( 1 ascites subîmes of the 13762 rat mammary adenocarcinoma both contain sialomucin as a major cell surface compo nent and are resistant to cytolysis by normal rat spleen lymphocytes |3 ±2% (SD) and O ±1%, respectively). Susceptibility to lysis did not increase following treatment of cells with neuraminidase, fucosidase, or aor 0-galactosidase. Treatment with trypsin signif...

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Three samples of carcinoembryonic antigens were purified from liver métastasesof primary colon cancer. The asparagine-linked sugar chains of carcinoembryonic antigens (CEA) were released as oligosaccharides by hydrazinolysis and the structures of oligosaccharides, thus obtained, was studied in combination with methylation analysis and several limited exoglycosidase digestions. All three CEAs c...

The aggregation of the â-peptide into amyloid is a key pathological event in Alzheimer’s disease. This process (â-amyloidosis) involves the conversion of soluble random coil, R-helical or â-sheet conformations into insoluble, aggregated â-pleated sheet structures. The pH is a significant extrinsic factor that influences â-amyloidosis, which must be related to the presence of ionizable groups in...