Virology Journal

Table 1 The distribution and intensity of a2,6SA-gal (stained by MAA) and a2,3SA-gal (stained by SNA) receptors on different tissues of 1-day-old, 2-4-week old and adult layer chickens, ducks and turkeys

From: Species and age related differences in the type and distribution of influenza virus receptors in different tissues of chickens, ducks and turkeys

		Species
Tissues		1-day		2-4-weeks		layers		1-day		2-4-weeks		layers		1-day		2-4-weeks		layers
		MAA % ^a In t^b	SNA % Int	MAA % Int	SNA % Int	MAA % Int	SNA % Int	MAA % Int	SNA % Int	MAA % Int	SNA % Int	MAA % Int	SNA % Int	MAA % Int	SNA % Int	MAA % Int	SNA % Int	MAA % Int	SNA % Int
Trachea		90 ++++	60 ++	90 +++	60 +++	80 +++	80 ++	90 ++++	90 ++++	90 ++++	90 +++	90 ++++	90 ++++	90 ++++	20 +++	90 ++++	70 +++	90 ++++	30 +++
Bronchi		90 ++++	60 ++	80 +++	60 +++	60 ++	-^c	90 ++++	90 ++++	90 ++++	90 ++++	90 ++++	90 ++++	90 +++	50 ++	90 ++++	60 ++	50 +	10 +
Small intestine		60 ++	10 ++	40-60 ++	20 ++	30 ++	-	-	-	-	-	25 +++	-	-	-	10 +++	-	-	-
Large intestine		80 +++	20 ++	70 +++	30-50 +++	80 +++	10 ++	>50 +++	5-10 +	35 +++	-	40-50 +++	-	70 +++	-	40 +++	-	50 +++	-
Kidney		70 ++++	20 ++	60 +++	30 ++	60 ++	50 ++	40 ++++	20 ++	60 ++++	10 ++	60 ++++	30 ++	60 ++++	-	50 ++++	20 ++	50 +++	20 ++
Oviduct		na^d	na	na	na	80 +++	-	na	na	na	na	90 ++++	-	na	na	na	na	90 ++++	-

^a: The receptor distribution in different tissues determined as the average percent of positive staining observed by visual examination of 3 different fields of the tissue from at least 3 birds of each species of specific age as observed under 200× magnification using a light microscope
^b: Intensity of staining observed, that corresponds approximately to the number of sialic acid molecules stained per cell, expressed as +(mild), ++(moderate), +++(strong) and ++++(very strong)
^c: No staining observed
^d: Not applicable

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ISSN: 1743-422X

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