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Table 1 Staining intensity comparison of the immunohistochemical distribution of CD9 in equine lung tissues between groups. Level of staining was scored from + (weakly positive) to +++ (strongly positive)

From: Research article expression of surfactant protein-A and D, and CD9 in lungs of 1 and 30 day old foals

Lung CD9 SP-A SP-D
One Day Foals 30 Day Foals One Day Foals 30 Day Foals One Day Foals 30 Day Foals
Alveolar septa + + +++ ++ ++ +++
Smooth muscle -/+ -/+ -/+ -/+ -/+ -/+
Bronchiolar Epithelium - - ++ +++ + ++
Vascular Endothelium + + +++ ++ +++ +++
Macrophages + + + + + ++