関: macronuclear、macronucleus、vegetative nucleus

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/11/28 09:55:18」(JST)

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A macronucleus (formerly also meganucleus) is the larger type of nucleus in ciliates. Macronuclei are polyploid and undergo direct division without mitosis. It controls the non-reproductive cell functions, such as metabolism. During conjugation, the macronucleus disintegrates, and a new macronucleus is formed by karyogamy of the micronuclei. The macronucleus contains hundreds of chromosomes, each present in many copies. The macronucleus lacks a mechanism to precisely partition this complex genome equally during nuclear division; thus, how the cell manages to maintain a balanced genome after generations of divisions is unknown.

English Journal

Toward major evolutionary transitions theory 2.0.

Szathmáry E1.
Proceedings of the National Academy of Sciences of the United States of America.Proc Natl Acad Sci U S A.2015 Aug 18;112(33):10104-11. doi: 10.1073/pnas.1421398112. Epub 2015 Apr 2.
The impressive body of work on the major evolutionary transitions in the last 20 y calls for a reconstruction of the theory although a 2D account (evolution of informational systems and transitions in individuality) remains. Significant advances include the concept of fraternal and egalitarian trans
PMID 25838283

Epistylis portoalegrensis n. sp. (Ciliophora, Peritrichia): A New Freshwater Ciliate Species from Southern Brazil.

Kühner S1,2, Simão TL2, Safi LS2, Gazulha FB2, Eizirik E2, Utz LR2.
The Journal of eukaryotic microbiology.J Eukaryot Microbiol.2015 Jul 21. doi: 10.1111/jeu.12252. [Epub ahead of print]
The peritrich ciliate Epistylis portoalegrensis n. sp. was found in two bodies of freshwater located in Porto Alegre, Southern Brazil. Morphological features were investigated using live and protargol-stained specimens. The zooids presented a vase to cylindrical shape narrowed at the scopula, and a
PMID 26198754

Myxoinflammatory fibroblastic sarcoma of the scalp: aggressive behavior at a rare, nonextremity site.

Vroobel K1, Miah A1, Fisher C1, Thway K2.
International journal of surgical pathology.Int J Surg Pathol.2015 Jun;23(4):292-7. doi: 10.1177/1066896915571452. Epub 2015 Feb 11.
Myxoinflammatory fibroblastic sarcoma (MIFS) is a rare low-grade malignant soft tissue neoplasm, which usually presents on the distal extremities of adults and sometimes children. It has a characteristic appearance, of a lobulated or multinodular neoplasm of moderately atypical epithelioid or spindl
PMID 25673633

Japanese Journal

Histone H3 lysine 9 methylation is required for DNA elimination in developing macronuclei in Tetrahymena

LIU Y.
Proc. Natl Acad. Sci. USA 101, 1679-1684, 2004
NAID 80016514063

Identification of microtubule associate protein from the macronuclei of Tetrahymena(Cell Biology and Morphology)(Proceeding of the Seventy-Third Annual Meeting of the Zoological Society of Japan)