The nucleus of the cell is a membrane-bound organelle that includes the nuclear envelope, nucleolus, and nuclear matrix, and is the site of gene expression. The nucleus can be selectively visualized by staining nuclear proteins or directly staining nucleic acids. Here we describe a wide...
长臂平行伸展、无随体5354正常男性:正常男性:46,XY正常女性:正常女性:46,XX55第三节第三节 核仁核仁nucleolus56概念概念 核仁(核仁(nucleolus):细胞核内由特定染):细胞核内由特定染色体上的核仁组织区缔合而成的结构,色体上的核仁组织区缔合而成的结构,是细胞内合成是细胞内合成rRNA、装配核糖体亚基、装配核糖体...
nucleole,nucleolus- a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis chromatin,chromatin granule- the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condense...
The nucleus and nucleolus of a cell. From Mahon and Manuselis, 2000. nucleus ambi´guusthe nucleus of origin of motor fibers of the glossopharyngeal, vagus, and accessory nerves in the medulla oblongata. nucleus an´sae lenticula´ris(nucleus of ansa lenticularis) a collection of neuron...
Cells have been described under the microscope as organelles containing cytoplasm and the nucleus. However, an unnoted structure exists between the cytoplasm and the nucleoplasm of eukaryotic cells. In addition to the nuclear envelope, there exists a per
5. RESULTS: Under a phase contrast microscope, NSCs showed turgor vitalis, clear nucleus and nucleolus, enlarged nervous process and dense lattice. 结果:在相差显微镜下观察培养的神经干细胞,细胞形态丰满,胞核及核仁清晰可见,神经突起粗大,网络稠密。
Nucleolus-Based Prognosis of Embryonic Development More than 15 years ago Tesarik and Greco reported a simple and non-invasive method for predicting the developmental potential of humanzygotesbased on the distribution and number ofnucleoliin thepronuclei(PNs) (seeGlossary)[1]. In their experiments,...
Nucleolus is the largest structure present in the nucleus of eukaryotic cells. Explore nucleolus function and the difference between nucleus and nuclelous.
The components of a nucleus include the nuclear envelope, which protects the interior of the nucleus and contains pores, which allow for substances to pass through. Inside the envelope is the nucleoplasm which contains DNA in the form of chromatin and the nucleolus, in which rRNA is produced. ...
Inside the nuclear envelope is a gel-like nucleoplasm with solutes that include the building blocks of nucleic acids. There also can be a dark-staining mass often visible under a simple light microscope, called anucleolus(plural =nucleoli). The nucleolus is a region of the nucleus that is res...