The glycocalyx of the epithelial cells of the colon, observed in normal and ulcerous colitic conditions.

Biopsies of subjects affected by ulcerous colitis were stained with ruthenium Red. Alterations of the cellular coat and glycocalyx of the epithelial cells of the colon were identified.     

The central tubuli in distal segments of olfactory cilia lack dynein arms.

By means of the tannic acid-glutaraldehyde fixation method, the lack of dynein bridges between the central two tubuli in distal segments of mouse olfactory cilia is demonstrated. Consequently, these organelles are supposed to be unable to beat actively, in contrast to the proximal ciliary shafts.     

Distribution of the blood flow supplied by the vertebral artery in rats: anatomical, functional and pharmacological aspects.

In rats, the vertebral artery make only a minor contribution to the blood perfusion of the ponto-medullary area. This was measured with radioactive microspheres and was confirmed by methylmetacrylate casts and local injection of a centrally acting hypotensive drug.     

Gastric mucus effusion elicited by oral copper compounds: potential anti-ulcer activity.

In rats, both Cu(I) and Cu(II) show an irritancy profile not shared with Cu degrees or Zn(II) or Ni(II). The gastric response to Cu(II), i.e. copius fluid and mucus secretion, can protect the stomach from the acute ulcerative effects of aspirin or physical stress administered subsequently.     

The accumulation pattern of ingested gossypol in selected organs of the rat.

Bound gossypol levels in the spleen and kidney of rats ingesting dietary gossypol (0.98%) varied directly with the feeding intervals of 6, 14, 28 and 35 days. Free gossypol level in the kidney, spleen and lungs increased for 14 days and then tended to decrease as the feeding period was extended.