Definition of "nonsecretor" [nonsecretor]

• That which is not a secretor. (noun)

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• "[17] Similarly, Lewis negative or nonsecretor status was significantly associated with lower lung function, and higher prevalence of wheezing and asthma, in blood group O adults."
• "[18] The association between blood group O / nonsecretor genotype and asthma has also been demonstrated in children."
• "To investigate the effect of blood group alleles (ABO genotype, nonsecretor phenotype, and FUT3 genotypes producing Lewis negative phenotypes) on CF lung severity risk, we performed multiple logistic regression analyses to predict severity status."