Abstract:
:The ultrastructure of the developing bronchiolar cell was studied in six age groups: prenatal (60 d post-conception); postnatal (1-, 7-, 14- and 21-day-old); and adult. Following intratracheal fixation, the lung tissue was processed for scanning and transmission electron microscopy. The lining of terminal bronchioles consists of cuboidal to columnar nonciliated bronchiolar cells (NBCs) and ciliated with or without microvilli. NBCs were recognized by indented centrally located nucleus. The apical surface extended beyond the surface of neighboring cells and was covered by minute microvilli, except in prenatal kittens. The NBCs of the adult were characterized by abundant mitochondria and glycogen inclusions. In prenatal kittens, the cytoplasm was filled with patches of alpha and beta form of glycogen. Postnatally, glycogen was reduced in quantity, became scattered throughout the cytoplasm and was predominantly of the beta form. Islands of cytoplasm, separated from the apical cytoplasm were observed in the lumen of adult bronchioles. This suggests an apocrine mode of secretion. The NBCs attain maturity by three weeks of age.
journal_name
Ultrastruct Patholjournal_title
Ultrastructural pathologyauthors
Al-Tikriti MS,Henry RWdoi
10.3109/01913123.2015.1013654subject
Has Abstractpub_date
2015-01-01 00:00:00pages
245-54issue
4eissn
0191-3123issn
1521-0758journal_volume
39pub_type
杂志文章abstract::In an attempt to recognize early stages of focal segmental glomerulosclerosis (FSGS) in patients with a clinical course suggesting a diagnosis other than minimal change disease (MCD) and normal histology, or minor, nondiagnostic changes on light microscopy (LM), we used a protocol for systematic and extensive electron...
journal_title:Ultrastructural pathology
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doi:10.3109/01913128809048472
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
pub_type: 杂志文章,评审
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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abstract::Electrophoresis revealed two cases of malignant lymphoma that each contained three M-proteins (IgM lambda.lgG kappa.lgG lambda and IgM lambda.IgM kappa.lgG kappa) in the sera. To determine cellular origin of each M-protein, atypical lymphoid and plasmacytoid cells of both cases were examined by electron microscopy. At...
journal_title:Ultrastructural pathology
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journal_title:Ultrastructural pathology
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abstract::The fate of the neutrophils within the inflammatory exudate in the periodontal crevice and their possible participation in the formation of neutrophil extracellular traps (NETs) are of clinical interest. However, the cytological analysis of clinical samples of inflammatory exudate is restricted by the obtainable quant...
journal_title:Ultrastructural pathology
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