Positioning of the cell division plane is critically important for tissue morphogenesis and architecture. 1 it is therefore not surprising that mitotic spindle orientation must be tightly regulated in living tissues, a phenomenon that is also observed in cells cultured in vitro. Because of the amenability of cultured cells to molecular and physical manipulation, many investigators have used suc...

Spindle cell neoplasms are defined as neoplasms that consist of spindle-shaped cells in the histopathology. Spindle cell neoplasms can affect the oral cavity. In the oral cavity, the origin of the spindle cell neoplasms may be traced to epithelial, mesenchymal and odontogenic components. This article aims to review the spindle cell neoplasms of the oral cavity with emphasis on histopathology. ...

The suppression of the regenerative chatter phenomenon in turning process via the variation of the frequency and amplitude of the spindle motor excitation is carried out in this research. A programmable inverter is employed for variable periodic excitation of the spindle motor. A set of turning experiments is designed and performed on a number of conical work pieces both in constant spindle spe...

A subcutaneous mass was noted in the abdomen of a 50-week-old male Wistar Hannover GALAS rat. Histologically, the tumor was composed of vimentin-positive small round cells with scant cytoplasm arranged in a trabecular, sheet or pericytoma-like pattern and spindle cells arranged in a bundle pattern and vimentin-negative round cells proliferating in an island-shaped pattern. Argentophilic thin fi...

spindle cell neoplasms are defined as neoplasms that consist of spindle-shaped cells in the histopathology. spindle cell neoplasms can affect the oral cavity. in the oral cavity, the origin of the spindle cell neoplasms may be traced to epithelial, mesenchymal and odontogenic components. this article aims to review the spindle cell neoplasms of the oral cavity with emphasis on histopathology.  ...

INTRODUCTION We have recently put forward a theory linking mitosis with cleavage, in which we suggest that cleavage is caused by an expansion of the cell cortex which starts at either pole of the cell and later moves round to the region of the furrow (Mitchison, 1952). There is evidence that this expansion is brought about by substances diffusing from the two groups of daughter chromosomes whic...

Dear Dr. Bedrossian: Although histological examination is by-and-far considered the gold standard for most soft tissue diagnoses, fine needle aspiration (FNA) is an excellent modality to determine the initial characteristics of the lesion in question. To our knowledge, there have been only two reported cases of ordinary lipoma and spindle-cell lipoma occurring at the same time in the same patie...

Background: In vitro maturation can have deleterious effects on spindle formation and proper chromosome alignment in human oocytes and can be profoundly affected by culture conditions. This study compared the spindle presence and location with the maturation rate Abstracts of the 12th Royan International Congress on Reproductive Biomedicine 3 1 International Journal of Fertility & Sterility (IJ...

We have studied cytoskeletal architectures of isolated mitotic apparatus from sea urchin eggs using quick-freeze, deep-etch electron microscopy. This method revealed the existence of an extensive three-dimensional network of straight and branching crossbridges between spindle microtubules. The surface of the spindle microtubules was almost entirely covered with hexagonally packed, small, round ...

An 11-year-old castrated male rabbit presented with a subcutaneous mass in the right hind limb. The mass comprised solid and myxoid areas. Solid areas were characterized by a storiform or interlacing pattern of spindle cells, strap cells, multinucleated giant cells and round cells with eccentrically located nuclei, whereas the myxoid areas were composed predominantly of elongated fusiform cells...