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61 In this way cohorts of embryos can be gathered which are synchronized to a particular developmental transition.

62 The respective fates awaiting the two groups of embryos could not be more dissimilar.

63 Both sides come together in their opposition to the cloning of human embryos, and object to commercial control over the process.

64 It is quite convenient to simplify the problem, and instead of thinking about sea-urchin or mouse embryos, to think about flags.

65 He observed that his ears, made almost transparent by the sunlight, closely resembled a pair of human embryos.

66 So now they fused karyoplasts taken from two-cell embryos with enucleated zygotes.

67 Embryos are organized so that interactions between cells occur on a small scale.

68 He then shook four-cell urchin embryos apart, and produced four complete embryos.

69 A quite different way of creating a chimaera is to fuse two early mouse embryos.

70 Animals are preserved as frozen embryos or as sperm freeze-dried to a powder and brought back to life.

71 This would explain why they are less able to support development in the embryos that are derived from them.

72 The extent of cell death varied between embryos and between the two sides of the neural tube in individual embryos.

73 But they were able to add transformed cells to existing embryos.

74 This might explain why discrepancies have emerged between patient records and stored embryos.

75 They will choose a shortlist of 200, who will be implanted with 10 cloned embryos.

76 The work was conducted on genetic material retrieved from embryos, not on embryos themselves.

77 Wherever possible such parameters should be compared with those of embryos of the same age recovered in vivo.

78 Nuclei could be successfully transferred between embryos that were in the same developmental domain(sentencedict.com), but not between embryos in different domains.

79 The fetal membranes from older embryos are also best handled initially as solid tissue because of difficulties in their mechanical disaggregation.

80 Was it overlooked because it demonstrates that insights into genetic disorders can be gained without use of human embryos?

81 In our experiments with Megan and Morag and Dolly, we placed two young embryos into each receiving ewe.

82 Despite heroic efforts by the scientists, these virgin-born turkeys rarely progressed beyond the stage of simple embryos.

83 But inherent in the diagnostic procedure is a presumption that defective embryos will be discarded.

84 This problem is also seen with embryos produced by other technologies that require embryos to be cultured in test tubes before implantation.

85 The simplest two-instrument cell injection technique for both primitive streak stage and for early somite stage embryos will be described.

86 What would happen if they transferred nuclei from two-cell embryos into enucleated cytoplasts taken from two-cell embryos?

87 But it is also possible to split young embryos artificially, and again produce whole animals from the individual cells.

88 That might do away with the need for embryos.

89 Both types of rice embryos have dimorphic cotyledons.

90 What recorded them were embryos of angiosperm and gymnosperm.