rosette

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rosette

 [ro-zet´]
1. any structure or formation resembling a rose.
2. the clusters of polymorphonuclear leukocytes around a globule of lipid nuclear material, as observed in the test for disseminated lupus erythematosus.
3. a figure formed by the chromosomes in an early stage of mitosis.

ro·sette

(rō-zet'),
1. The quartan malarial parasite Plasmodium malariae in its segmented or mature phase.
2. A grouping of cells characteristic of neoplasms of neuroblastic, neuroectodermal, or ependymal origin; nuclei form a ring from which neurofibrils, which can be demonstrated by silver impregnation, extend to interlace in the center (Homer-Wright rosette); arrangement of ependymal cells around a vessel (perivascular pseudorosette) or around a space or channel (transependymal rosette).
3. Roselike coiling of the uterus among certain pseudophyllidean tapeworms, such as Diphyllobothrium latum.
4. Cells of one type surrounding a cell of another type.
[Fr. a little rose]

rosette

/ro·sette/ (ro-zet´) [Fr.] any structure or formation resembling a rose, such as (a) the clusters of polymorphonuclear leukocytes around a globule of lipid nuclear material, as observed in the test for disseminated lupus erythematosus, or (b) a figure formed by the chromosomes in an early stage of mitosis.
Flexner-Wintersteiner rosette  a spoke- and wheel-shaped cell formation seen in retinoblastoma and certain other ophthalmic tumors.
Homer Wright rosette  a circular or spherical grouping of dark tumor cells around a pale, eosinophilic, central area that contains neurofibrils but lacks a lumen; seen in some medulloblastomas, neuroblastomas, and retinoblastomas or other ophthalmic tumors.

rosette

[rōzet′]
1 any structure resembling a rose.
2 a sporulating body of a malarial parasite.
A term for a garland-like arrangement of structures, cells or bodies around a central point or blood vessel, usually seen by light microscopy

ro·sette

(rō-zet')
1. The quartan malarial parasite Plasmodium malariae in its segmented or mature phase.
2. A grouping of cells characteristic of neoplasms of neuroblastic or neuroectodermal origin; a number of nuclei form a ring from which neurofibrils, which can be demonstrated by silver impregnation, extend to interlace in the center.
3. Roselike coiling of the uterus among certain pseudophyllidean tapeworms, such as Diphyllobothrium latum.
[Fr. a little rose]

rosette

  1. any rose-shaped structure, for example a circle of leaves growing from a central point.
  2. a deficiency disease in plants caused by lack of boron or zinc.

rosette

any structure or formation resembling a rose, such as (1) the clusters of polymorphonuclear leukocytes around a globule of lipid nuclear material, as observed in the test for disseminated lupus erythematosus, or (2) a figure formed by the chromosomes in an early stage of mitosis.

rosette of Furstenberg
the white ridges of mucous membrane that radiate from the internal orifice of the teat of ruminants.
rosette inhibition test
used to detect the presence of 'early pregnancy factor' but has problems of application and limited usefulness.