Histomorphological and histochemical studies on the lungs of buffalo during prenatal development
2006
Sohi, B.S. | Singh, O.
Histomorphological studies were conduced on lungs of 17 Indian buffalo fetuses ranging from 3-8 cm to 110.6 cm crown rump length (CRL). The prenatal development of buffalo lungs was divided into 3 chronological periods, viz., pseudoglandular, canalicular pseudoglandular period lung tissue comprise glandular tubules lined with stratified columnar epithelium haviang condensed mesenchyme around them. Pleura was differentiated Bronchial cartilage plates were differentiated at 5.5 cm and were very well developed at 10.1 cm CRL. The septation and lobulation was distinct at 22.5 cm CRL. The collagen and reticular fibres were associated with pleura and interlobular septa. During canalicular period at 37.5 cm CRL tubules lined by simple cuboidal epithelium with dilated lumen called canaliculi appeared. The mesenchymal content decreased and vascularity increased. The elastic fibres were associated with vascular system during pseudoglandular and canalicular periods. During the alveolar stage at 78 cm CRL cells resembling the type 1 and type II pneumocytes/alveolar cells appeared. The bronchi and bronchioles were well developed at this stage. The proteins and lipids were histochemically localized during different stages of development.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Indian Council of Agricultural Research