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211 Objective: To study the effect of estrogen and progestogen on the development and implantation of mouse embryos in vitro.

212 Analysis of these mutant embryos reveals variable, yet striking defects in caudal specification, limb patterning and axial skeleton formation.

213 Fossilized animal embryos of 570 - 600 million years ago from Doushantuo formation of East China.

214 But the scientific use of embryos is an issue of debate.

215 In results, after NGVEV was propagated in 10-days-old duck embryos for 4 passages by allantoic cavity inoculation, it was adaptable to the DEFs cell culture system.

216 A male tomato clownfish (Amphiprion frenatus) tends his field of developing eggs like a gardener, scooping away ones with dead embryos.

217 Early division phase embryos may use metabolites provided by the suspensor, persistent and degenerating synergids.

218 The project represents a refinement of plans to use controversial "hybrid embryos" to create stem cells that carry a genetic mutation responsible for motor neurone disease.

219 Any embryonic stem cells used would be taken from four or five-day-old embryos left over from IVF treatment and donated to the research project.

220 Parthenogenetic embryos could be used to detect the culture system in vitro as well as fertilized embryos.

221 After preparing 114 frozen embryos from Canadian Holstein(sentencedict.com), we have got 68 ET calves by nonsurgical embryo transferring.

222 Now that we know that microglia originate in early embryos, theoretically we should be able to generate microglia from embryonic stem cells to treat brain diseases caused by defective microglia.

223 Biological effects of microgravity on brain cells were simulated by rotating chicken embryos in a clinostat during their hatch.

224 In his paper, Haeckel drew by hands the morphological features of early embryos of several animal species.

225 Therefore the allo-granular cells' mitochondria transfer improved the development of bovine parthenogenetic embryos.

226 Somatic cells of angiosperms enter a regenerative phase and behave like embryos.

227 Embryos that fit the bill are then implanted in the mother's womb. Sentencedict.com

228 They occur naturally when bacteria, plants and insects reproduce asexually, and when mammalian embryos split and go on to develop into identical twins.

229 The secondary oocytes from Saanen dairy goats and 4-32 cell embryos from Shaanbei black goats were used as cytoplast donors and karyoplast donors respectively.

230 A plantlet had been obtained. Histological sections proved that the embryos had a typical histological structure of monocot somatic embryos.

231 A junior embryologist neglected to read the label on the embryos before they were implanted in the wrong woman through IVF.

232 For years, private financing has been used to create embryonic stem cell lines, mostly from discarded embryos from fertility clinics.

233 Various celeriac explants were in vitro cultured on MSO media added different ingredients in order to induce high quality somatic embryos suitable for making artificial seeds.

234 Objective:YAG double-frequency laser microbeam was applied to study the effects on protein pattern of dimensional electrophoresis of tail bud embryos of Bufo bufo gargarizans.

235 The effects of different embryo bisection solutions and methods and embryo development stages on in vitro embryos bisection of ovine were researched in this experiment.

236 The scientist has made a pointed comparison between suspensors of plant embryos and mammalian trophoblasts.

237 In conclusion, yak are able to crossbreed with Bos taurus, but the rates of cleavage and blastocyst development of resultant hybrid embryos were different between different fertilization combinations.

238 The results indicated that PTEN is involved in the preimplantation embryos development, and affects the formation of blastocoele.

239 Britain became the first European country to legalize the creation of cloned human embryos.

240 The somatic embryos developed directly into plantlets with roots and buds through multicellular proembryo, globular, heart -shaped, torpedo - shaped and cotyledon stages.