Endocytotic activity of kitten odontoblasts in early dentinogenesis. 1. Thin section and freeze-fracture study.
AUTOR(ES)
Sasaki, T
RESUMO
The morphological features of odontoblast processes in young kitten odontoblasts were studied by thin section and freeze-fracture electron microscopy. Freeze-fracture replication revealed depressions with particles on the plasma membranes of the proximal parts of odontoblast processes. Comparison with thin sections suggested that these depressions represented sites of endocytosis. Frequent depressions with particles (corresponding to coated pits in thin sections) indicate the high absorptive activity of young odontoblasts. The results indicate that odontoblasts, especially in the proximal parts of their processes, play a significant functional role in the modification of the predentine matrix during early dentinogenesis.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1164332Documentos Relacionados
- Intercellular junctions of the hen parathyroid gland. A freeze-fracture study.
- Intramembrane changes occurring during maturation of herpes simplex virus type 1: freeze-fracture study.
- Freeze-fracture study of mast cell secretion.
- Early myelin breakdown following sural nerve crush: a freeze-fracture study
- Developmental changes in the plasma membrane of gizzard smooth muscle of the chicken. A freeze-fracture study.