| 释义 |
Definition of planarian in English: planariannoun pləˈnɛːrɪənpləˈnerēən A free-living flatworm which has a three-branched intestine and a tubular pharynx, typically located halfway down the body. 涡虫 Order Tricladida, class Turbellaria: Planaria and other genera Example sentencesExamples - Irrespective, this evidence establishes the existence of actively crawling organisms, almost certainly bilaterians, and almost certainly above the grade of planarians because of the implied hydrostatic skeleton.
- In Hydrozoans the same orthologous six genes are required for eye regeneration as in planarians, and in the box jellyfish Tripedalia a pax B gene, which may be a precursor of Pax6, was found to be expressed in the eyes.
- Thus, we conclude that neoblasts, the totipotent stem cells in the planarians, of acquired sexuals remain ‘asexual’ and the worms require external supply of a sexualizing substance for the differentiation of sexual organs and gametes.
- Nevertheless, duplication of Hox genes has been observed, notably in the planarian D. tigrina in which the genes DtGtHoxC and DtGtHoxE were proposed to derive from a recent duplication event.
- The expression of Djhox#1053 in X-ray irradiated planarians cut two days after irradiation, was tested by whole mount in situ hybridization.
- In planarian worms, Pax6 orthologs are expressed in developing eyes, but do not appear to be required for eye development.
- He and his colleagues worked primarily on hydroids and planarians.
- We then conducted competitive hybridization experiments of cDNAs between a head portion and the other body portion of planarians in order to screen genes specifically expressed in a planarian brain.
- Some of these genes have already been found in freshwater planarians, polyclads and acoels, but their expression is still unknown.
- The mostly free-living Turbellaria include the planarian, Dugesia, shown above; these are found in the oceans, in fresh water, and in moist terrestrial habitats, and a few are parasitic.
- He received his Ph.D. in 1902 working on the behavior of planarians and stayed on as instructor of zoology until 1906.
- The neoblast system is best characterized in planarians and macrostomids.
- In order to prove that the amounts of genomic DNA in planarians and Cladonema were enough for single-copy gene detection under the experimental condition, the Cladonema Pax-B paired box was used to probe the same blot.
- The planarians used in these studies, also called flatworms, live in fresh water and have a singular ability to regenerate.
- Some animals also show great ability to regenerate: small fragments of animals such as starfish, planarians, and Hydra can give rise to a whole animal.
- Here we describe trans-splicing in the freshwater planarian Schmidtea mediterranea, a free-living member of the phylum Platyhelminthes.
- To test the function of Hox genes in anteroposterior axis specification in flatworms, single, double and triple injections of dsRNA of Dthox-D and C and GtAbdBb in intact and regenerating planarians are presently being studied.
- In planarian regeneration, they could be instrumental to transforming the homogeneous blastema and postblastema fields into discrete patterned regions corresponding to the lost elements.
- Around the same time, they reported that planarians move away from intense visible light, and they showed that even blinded planarians are negatively phototaxic.
OriginMid 19th century: from modern Latin Planaria (feminine of Latin planarius 'lying flat') + -ian. Rhymesagrarian, antiquarian, apiarian, Aquarian, Arian, Aryan, authoritarian, barbarian, Bavarian, Bulgarian, Caesarean (US Cesarean), centenarian, communitarian, contrarian, Darien, disciplinarian, egalitarian, equalitarian, establishmentarian, fruitarian, Gibraltarian, grammarian, Hanoverian, humanitarian, Hungarian, latitudinarian, libertarian, librarian, majoritarian, millenarian, necessarian, necessitarian, nonagenarian, octogenarian, ovarian, Parian, parliamentarian, predestinarian, prelapsarian, proletarian, quadragenarian, quinquagenarian, quodlibetarian, Rastafarian, riparian, rosarian, Rotarian, sabbatarian, Sagittarian, sanitarian, Sauveterrian, sectarian, seminarian, septuagenarian, sexagenarian, topiarian, totalitarian, Trinitarian, ubiquitarian, Unitarian, utilitarian, valetudinarian, vegetarian, veterinarian, vulgarian Definition of planarian in US English: planariannounpləˈnerēən A free-living flatworm which has a three-branched intestine and a tubular pharynx, typically located halfway down the body. 涡虫 Order Tricladida, class Turbellaria: Planaria and other genera Example sentencesExamples - Some of these genes have already been found in freshwater planarians, polyclads and acoels, but their expression is still unknown.
- In order to prove that the amounts of genomic DNA in planarians and Cladonema were enough for single-copy gene detection under the experimental condition, the Cladonema Pax-B paired box was used to probe the same blot.
- The mostly free-living Turbellaria include the planarian, Dugesia, shown above; these are found in the oceans, in fresh water, and in moist terrestrial habitats, and a few are parasitic.
- He and his colleagues worked primarily on hydroids and planarians.
- In planarian worms, Pax6 orthologs are expressed in developing eyes, but do not appear to be required for eye development.
- In planarian regeneration, they could be instrumental to transforming the homogeneous blastema and postblastema fields into discrete patterned regions corresponding to the lost elements.
- The neoblast system is best characterized in planarians and macrostomids.
- Nevertheless, duplication of Hox genes has been observed, notably in the planarian D. tigrina in which the genes DtGtHoxC and DtGtHoxE were proposed to derive from a recent duplication event.
- Thus, we conclude that neoblasts, the totipotent stem cells in the planarians, of acquired sexuals remain ‘asexual’ and the worms require external supply of a sexualizing substance for the differentiation of sexual organs and gametes.
- We then conducted competitive hybridization experiments of cDNAs between a head portion and the other body portion of planarians in order to screen genes specifically expressed in a planarian brain.
- Here we describe trans-splicing in the freshwater planarian Schmidtea mediterranea, a free-living member of the phylum Platyhelminthes.
- To test the function of Hox genes in anteroposterior axis specification in flatworms, single, double and triple injections of dsRNA of Dthox-D and C and GtAbdBb in intact and regenerating planarians are presently being studied.
- In Hydrozoans the same orthologous six genes are required for eye regeneration as in planarians, and in the box jellyfish Tripedalia a pax B gene, which may be a precursor of Pax6, was found to be expressed in the eyes.
- The expression of Djhox#1053 in X-ray irradiated planarians cut two days after irradiation, was tested by whole mount in situ hybridization.
- Irrespective, this evidence establishes the existence of actively crawling organisms, almost certainly bilaterians, and almost certainly above the grade of planarians because of the implied hydrostatic skeleton.
- Some animals also show great ability to regenerate: small fragments of animals such as starfish, planarians, and Hydra can give rise to a whole animal.
- He received his Ph.D. in 1902 working on the behavior of planarians and stayed on as instructor of zoology until 1906.
- Around the same time, they reported that planarians move away from intense visible light, and they showed that even blinded planarians are negatively phototaxic.
- The planarians used in these studies, also called flatworms, live in fresh water and have a singular ability to regenerate.
OriginMid 19th century: from modern Latin Planaria (feminine of Latin planarius ‘lying flat’) + -ian. |