Veterinary Research

Table 2 Distribution of Sia α-2,3 Gal and Sia α-2,6 Gal receptors^a in the intestinal tract of seven avian species.

From: Distribution patterns of influenza virus receptors and viral attachment patterns in the respiratory and intestinal tracts of seven avian species

Tissues, cell type	Species, receptor type^b
	Chicken		Common Quail		Red-legged Partridge		Turkey		Golden Pheasant		Ostrich		Mallard
	α-2,3	α-2,6	α-2,3	α-2,6	α-2,3	α-2,6	α-2,3	α-2,6	α-2,3	α-2,6	α-2,3	α-2,6	α-2,3	α-2,6
Duodenum
Columnar epithelial cells	++	-	+	+	-	-	+	-	++	+	+	-	+++	-
Goblet cells	+++	-	++	+	-	+	-	-	+	+	++	-	-	-
GALT lymphocytes	-	+	-	+	+	+	+	+	+	+	-	+	+	-
Jejunum-Ileum
Columnar epithelial cells	++	+	+	+	+	-	+	-	++	+	+	-	+++	-
Goblet cells	+++	-	++	-	-	-	+	-	+	+	++	-	-	-
Cecum
Columnar epithelial cells	+	+	++	++	+	+	-	+	++	+	+	-	+++	-
Goblet cells	-	-	-	+	-	-	-	-	+	++	++	-	-	-
GALT lymphocytes	-	++	-	+	-	+	-	+	-	+	-	+	-	-
Colon
Columnar epithelial cells	+	-	++	+	+	-	+	+	++	+	-	-	+++	-
Goblet cells	-	-	-	+	-	+	-	-	-	++	++	-	-	-
GALT lymphocytes	-	++	-	-	-	-	+	-	+	+	-	+	-	-

^a The distribution of α-2,3 and α-2,6 influenza receptors was done using lectin immunohistochemistry.
^b -: negative; +: low; ++: moderate; +++: strong.

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