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Genetic and Nongenetic Variation in the AB0 Agglutinin Levels of Plasma, Saliva and Milk

Published online by Cambridge University Press:  27 January 2025

R. Barrantes  and
F.M. Salzano
R. Barrantes
Affiliation:
Department of Genetics, Biosciences Institute, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
F.M. Salzano*
Affiliation:
Department of Genetics, Biosciences Institute, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
*
Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa Postal 1953, 90000 Porto Alegre, RS, Brazil

Abstract

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The agglutinin levels of 250 parturient women and their newborn babies were studied and the modifying influence of 16 variables evaluated. The most important factor in this variability is the AB0 phenotype. The agglutinin titers are generally higher in milk than in plasma or saliva. Blacks always show salivary agglutinins in higher frequencies than Whites. Within each fluid the amount of anti-A and anti-B are always highly correlated (r 0.59-0.79). Associations were also observed between the titers in plasma and milk (r 0.25-0.30). The plasma and milk anti-A levels of the 0 mothers are correlated with those of their 0 children (r 0.28-0.37), but the anti-B are not. Socioeconomic conditions may affect the salivary anti-A and anti-B titers.

Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 27 , January 1978 , pp. 31 - 38
Copyright
Copyright © The International Society for Twin Studies 1978

Footnotes

*

Escuela de Biología, Universidad de Costa Rica, San José, Costa Rica.

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