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, 14:37, 19 February 2011
==='Foam' in the trachea===
*Seen as an agonal change in all animals, especially large animals
*Can be blood stained (see above)
*Usually not of pathological significance, and doesn't necessarily indicate [[Lungs Circulatory - Pathology#Pulmonary oedema|pulmonary oedema]]
[[Category:Trachea - Pathology]]
[[Category:Respiratory System - Degenerative Pathology]]