English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In gland cells of the exocrine pancreas of the guinea pig and the anterior pituitary of the hamster both of which were fed in normal condition, electron microscopy explored the occurrence of curious concentric lamellae which are probably composed of multiple apposition of many cup-shaped cisternae of the smooth-surfaced endoplasmic reticulum. Cavities of the cisternae are empty and almost collapsed in the case of the guinea pig pancreas, but in the hamster pituitary they contain a relatively large amount of homogeneous substance. It must be emphasized that these bodies, in both of the pancreas and the pituitary, are not whorls or spirals but they are actually concentric circles as seen in some plane of sectioning. In another plane of sections such as those vertical to the former, the structure may be seen like an up-to-down cut-surface of onions. Most of the membranes of these concentric lamellae are smooth-surfaced, but peripheral parts may be studded with ribosomes. The structures reported here may be one of the variations in arrangement of the endoplasmic reticulum, but functional or pathological (if this structure is an abnormal being) significance of these lamellar bodies may not be decided at the present level of accumulation of knowledges concerning this structure.

Concentric Lamellar Arrangement of Smooth-Surfaced Endoplasmic Reticulum Found in Some Gland Cells