| 释义 |
morphallaxis Zool.|mɔːfəˈlæksɪs|
[f. Gr. µορϕ-ή form + ἄλλαξις exchange.]
Regeneration by the transformation of existing bodily material.
1901T. H. Morgan Regeneration i. 23 At present there are known two general ways in which regeneration may take place... In order to distinguish broadly these two modes I propose to call those cases of regeneration in which a proliferation of material precedes the development of the new part, ‘epimorphosis’. The other mode, in which a part is transformed directly into a new organism, or part of an organism without proliferation at the cut-surfaces, ‘morphallaxis’. 1924G. R. de Beer Growth viii. 53 In regeneration in some cases (where morphallaxis occurs), it [sc. material needed for growth] is derived from the other tissues of the organism which thereby undergo reduction. 1956C. H. Waddington Princ. Embryol. xiv. 304 Animals such as coelenterates, flatworms and oligochaetes in which morphallaxis occurs to a considerable extent. 1965Kiortsis & Moraitou in Kiortsis & Trampusch Regeneration in Animals 259 If the anteriorly facing cut end of the nerve cord [in the polychaete worm Spirographis spallanzanii] is deflected, there is a morphallaxis on one or both sides.
Add: Hence morphaˈllactic a.
1937Biol. Bull. LXXII. 115 A self-determined morphallactic process. 1952A. E. Needham Regeneration & Wound-Healing i. 2 In the Amphibia portions of late blastula- and even gastrula-stages are able to regulate eventually by ‘post-generation’, again a morphallactic process. 1980Jrnl. Theoret. Biol. LXXXII. 105 Animals with a morphallactic type of regeneration are assumed to possess a persistent signalling system similar to those believed to exist in embryos. |