Lung Fœtal Histology

Histological Section Of A Human Fetal Lung At The Stage Of 12 Weeks Of Gestation. Staining With An Anti E Cadherin Antibody, In Brown, And With Hematoxylin For Nuclear Dna, En Blue. Magnification: 250X. At This Stage The Lung Is Immature And The Future Airways E. G. Bronchi Look Like Glands. The Parenchyma And The Forming Cells Visualized By Their Nuclei In Blue, Have No Significant Density That Usually Is Found In Adults. The Epithelium Colored In Brown With An Anti E Cadherin Specific Antibody Is In Monolayer, Not Stratified And Undifferentiated Since There Is No Distinct Cell Types Such As Mucous, Brush, Etc. The Cells Possess Big Vacuoles And A Nucleus In Purple That Is Oriented Towards The Bronchiolar Opening. (Photo By BSIP/UIG Via Getty Images)