Observations from diverse literature sources reveal that diatomists have more-or-less consistently viewed T. pseudonana as a small (less than 10 μm diameter) centric diatom with 0– 3 central area strutted processes, a relatively high number of marginal area strutted processes, and a labiate process situated roughly equidistantly between two marginal area strutted processes [1-7]. Ultrastructura...

to evaluate the influence of core thickness and fabrication stages on the marginal accuracy of ips e.max press crowns.twenty ips e.max press crowns, 1.5mm thick, were fabricated on metal dies. the crowns had two different core thicknesses, 0.8mm for group a and 1mm for group b, ten for each group. marginal gap was measured after each stage of core fabrication, veneering and glaze firing. the sp...

The marginal zone, in pregastrulating chick blastoderms, has been defined as the intermediate ring between the epiblast proper and the most external region, the area opaca (Spratt & Haas, 1960). Azar & Eyal-Giladi (1979) have shown that the marginal zone of a stage XIII blastoderm has the capacity of regenerating an inductive layer which when in contact with a competent stage XIII epiblast can ...

PURPOSE To compare marginal and internal gaps of zirconia substructure of single crowns with those of three-unit fixed dental prostheses. MATERIALS AND METHODS Standardized Co-Cr alloy simulated second premolar and second molar abutments were fabricated and subsequently duplicated into type-III dental stone for working casts. After that, all zirconia substructures were made using Lava™ system...

The marginal nucleus is a congregation of large cells in the lateral portion of the spinal cord and is found in a number of vertebrates including man and is prominent in reptiles. Recent studies suggest that these cells are mechanoreceptors that respond to stretching of the spinal cord, and are unique in that they are located within the central nervous system. Studies on the marginal nucleus in...