polyribosomes


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pol·y·ri·bo·somes

(pol'ē-rī'bō-sōmz),
Conceptually, two or more ribosomes connected by a molecule of messenger RNA; structures satisfying this concept can be seen in electron micrographs and can be sedimented at rates consistent with aggregates of ribosomes (whence it is often, sometimes incorrectly, assumed that aggregates containing ribosomes are true polyribosomes); polyribosomes are active in protein synthesis.
Synonym(s): polysomes

pol·y·ri·bo·somes

(pol'ē-rī'bō-sōmz)
Two or more ribosomes connected by a molecule of messenger RNA.
Synonym(s): polysomes.
References in periodicals archive ?
Additional features of the tumor cells included moderately abundant mitochondria, stacks of rough endoplasmic reticulum, and polyribosomes.
Mercury compounds can bind to the RNA of tobacco mosaic viruses (Katz & Santilli, 1962), several synthetic polyribosomes, and yeast soluble RNA (Kawade, 1963).
The cytoplasm contained many mitochondria, prominent Golgi apparatus, numerous polyribosomes, moderate endoplasmic reticulum, a few lipid droplets, and, focally, intermediate filaments.
The exact percentage of glassy cells needed to make the diagnosis of GCC is not well established, but it may range from 30% to 100%[1,9] Ultrastructurally, glassy cells may show intermediate filaments, polyribosomes, tonofibrils, and desmosomes.
Electron microscopy revealed cells with prominent nucleoli and abundant cytoplasmic polyribosomes (Figure 4).