The trachea was canulated, and the left and right superficial subcutaneous forearm veins canulated.
In particular, there was no evidence of any cytopathogenic or inflammatory change in the trachea or lungs.
This uncommon abnormality can give rise to symptoms due to compression of the trachea and esophagus.
It then descended behind the trachea and esophagus to supply the posterior and medial segments of the right lower lobe.
Both genotypes therefore display the same progression of phenotypes, from brown midgut to brown tracheae to death.
The placement of the trachea is, however, such that food can sometimes fall into it and end up in the wrong place.
However, we were unable to dissect the tracheae without damaging them, so we cannot exclude dissection damage as the cause of this staining.
The fetal trachea is filled with amniotic fluid, and thus readily seen using sonography.
