... the support structures of the avian gas-exchange mantle. Lung tissue of two bird species belonging to strong flying birds (pigeon and barn owl) and two relatively flightless species (domestic fowl and quail) was subjected to standard processing for transmission and scanning electron microscopy after...

...R. Huang; Q. Zhi; A. Neubüser; T.S. Müller; B. Brand-Saberi; B. Christ; J. Wilting We have studied the distribution of thoracic somite and somitocoele-derived cells using homotopical grafting between quail and chicken embryos and rein-cubation periods of 2-6 days. Serial sections were evaluated...

... and morphometry. HNK-1-labelled cells advanced rostrocaudally in the gut of quail embryos (to the duodenum by stage HH 21 to the umbilicus by HH 25, to the ceca by HH 27, to the cloaca by HH 33). The timetable in chick embryos appeared to be slightly slower, but neural cells were obscured by background...