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  • Title: N-acetyl-9-O-acetylneuraminic acid, the receptor determinant for influenza C virus, is a differentiation marker on chicken erythrocytes.
    Author: Herrler G, Reuter G, Rott R, Klenk HD, Schauer R.
    Journal: Biol Chem Hoppe Seyler; 1987 May; 368(5):451-4. PubMed ID: 3497642.
    Abstract:
    Erythrocytes from chicken of different age were analysed for their agglutinability by influenza C virus, which has been shown recently to use N-acetyl-9-O-acetylneuraminic acid as a high-affinity receptor determinant for the attachment to cells. Only with birds not younger than six days complete agglutination of the erythrocytes was observed. The hemagglutination titer which was initially low reached its maximum value at the age of about 20 days. Sialic acid was isolated from erythrocytes, purified and analysed by colorimetry, thin-layer chromatography, high-performance liquid chromatography, and gas-liquid chromatography-mass spectrometry. The sialic acid content of erythrocytes from one-day old and adult chicken was 21 micrograms and 18 micrograms sialic acid/ml packed erythrocytes, respectively. While N-acetylneuraminic acid was the major type of sialic acid on erythrocytes from both one-day old and adult chicken, N-acetyl-9-O-acetylneuraminic acid was only detected on red blood cells from adult animals accounting for 30-40% of total sialic acid. These results indicate that N-acetyl-9-O-acetylneuraminic acid, in addition to serving as a receptor determinant for influenza C virus, represents a developmental marker on chicken erythrocytes.
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