By Kwang W. Jeon, Martin Friedlander (Eds.)
This serial provides present advances and entire stories in mobilephone biology - either plant and animal. Articles deal with constitution and keep an eye on of gene expression, nucleocytoplasmic interactions, keep an eye on of phone improvement and differentiation, and mobile transformation and development. assurance has been accelerated to incorporate molecular biology utilized to phone organic platforms, cell-cell interactions, telephone floor and receptor phenomena, and plenty of different parts.
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Extra resources for International Review of Cytology, Vol. 142
In conclusion, in vitro models simulating interdental or periodontal relationships have been used under conditions lacking any possibility to define the model component parameters. Under such conditions, it is not possible to study the sequential evolvement of the cells and matrices or the origin and character of a particular matrix or its attachment to established root surfaces. This has already been pointed out by Bernstein er al. (1989b). Furthermore, it is questionable whether the fact that mixed gingival fibroblasts attach to denuded but variably coated dentine has anything in common with biological problems of periodontal regeneration, specifically regenerative cementogenesis.
1988). In principle, it consisted of a cultural system in which cells were grown in the presence of denuded root discs, about 150-300 pm thick, that were cut transversely from middle and apical portions of extracted or otherwise removed, healthy teeth. 5 mm left between the paired discs. O mm between tooth and bone. Cells were either added to pretreated REGENERATIVE CEMENTOGENESIS 29 discs or precultured prior to disc placement. The complete system was cultured under standard conditions supplemented with ascorbic acid for periods up to 90 days.
Furthermore, it was suggested that partially demineralized substrates favor cell matrix orientation and attachment, whereas demineralized cementum is more efficient in maintaining that attachment (Pitaru and Melcher, 1983; Pitaru et a / . , 1984a,b). The first light- and electron-microscopic studies on the development and composition of the interdisc matrix synthesized in uitro were reported by Quarnstrom and Page (1986), Fernyhough et al. (1987), and Pitaru and Melcher (1987). Using totally or very briefly decalcified root discs of unspecified human teeth, planed to create a smooth dentine surface, and a preculture of confluent human gingival fibroblasts of the 5th to the 10th passage, Quarnstrom and Page (1986) described the development and composition of the interdisc matrix histologically and biochemically in cultures 5 days to 13 weeks old.
International Review of Cytology, Vol. 142 by Kwang W. Jeon, Martin Friedlander (Eds.)