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Biomedical subjects

N Otsuka

Publications and source records attributed to N Otsuka.

At least 199 records · Page 11Linked to original sources
PubMed1977

Catecholamine-storing cells in the cyclostome heart.

The lamprey heart contains characteristic catecholamine-storing cells in both the atrium and the ventricle. Sufficient circumstantial evidence is available indicating that catecholamines together with protein carbohydrate complexes are contained in these cells within the membrane bound cytoplasmic granules. If the "recepto-secretory function" and "neuroectodermal origin" of these cells are proved, then they may be classified as typical paraneurons.

Animals↗
PubMed1975

Freeze-etching images of rabbit thyroid glands.

Freeze-etching images of the rabbit thyroid were described. The outline of the structure of the follicular epithelial cell in freeze-etching techniques is consistent with that in ultrathin sections. The subapical junctional complex consists of tight and gap junctions. According to the number of strands (5-16) indicating the tight junction and the depth of the tight junction (0.3-1.1 mum), this is classified into the "very tight" form of CLAUDE and GOODENOUGH(1973). The number of intramembranous particles per mum2 on the A-face of the lateral as well as the apical plasma membrane is far larger than that on the B-face. The limiting membrane of the reabsorbed colloid droplet shows also a similar pattern to that of the plasma membrane. The capillary endothelial cells show numerous fenestations whose population density is about 20/mum2 on the endothelial surface except in the parajunctional zone.

Animals↗