| 释义 |
† mitosome Cytology. Obs.|ˈmaɪtəʊsəʊm|
Also 9 mitosoma.
[a. G. mitosoma (G. Platner 1889, in Arch. f. mikrosk. Anat. XXXIII. 199), f. Gr. µίτο-ς thread + σῶµα body.]
(See quots.)
1891Jrnl. R. Microsc. Soc. 461 The portion of the mitosoma which becomes attached to the nucleus becomes chromatic and wanders to the anterior end of the spermatozoon. 1895G. W. Field in Jrnl. Morphol. XI. 237 In view of the fact that the term ‘Nebenkern’ has come to be applied to many sorts of intracellular structures..it seems best, since the history of the middle piece or ‘Nebenkern’ is now better understood, that this noncommittal term..should be replaced by some term which gives a hint as to the nature of this body. Since the middle piece or ‘Nebenkern’ of the echinoderm spermatozoön is formed from the mitotic spindle, the term ‘mitosome’, introduced by Platner, has been adopted and will be used to designate the middle piece, = Nebenkern = corpuscle accessoire of other writers. 1920L. Doncaster Introd. Study Cytol. vii. 95 In the spermatocyte, as the cell enlarges, the mitochondrial bodies increase in size... In the young spermatid they unite to form a fairly compact mass near the nucleus at the side of the cell at which the tail will grow out. [Note] This mitochondrial mass (‘mitosome’) constitutes the ‘Nebenkern’ of some authors, but as the word has been used to designate the remains of the division-spindle.., the ‘idiozome’..and other cell-structures, it is now dropping out of use. 1925E. B. Wilson Cell (ed. 3) iv. 366 One of these [elements of doubtful nature] is the spindle-remnant, sometimes called the ‘mitosome’... This body was believed by some earlier observers to play an important part in the sperm-formation, and was confused with the nebenkern or with the acroblast; but later studies seem to show that it disappears without taking any definite part in the sperm-formation. 1934L. W. Sharp Introd. Cytol. (ed. 3) xiv. 218 In insects generally the chondriosomes form a single more or less compact body, the nebenkern (the mitosome of Gatenby). |
