1986
DOI: 10.1038/320570b0
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Embryo research

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Cited by 11 publications
(6 citation statements)
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“…These arguments could explain why there is a period of almost seven years between the first (Grobstein, 1979) and the second (Yu & Chan, 1986) article in which the term preembryo was used. This second reference coincided with a long debate that followed the statements made by the Warnock Commission (Warnock, 1984) in the United Kingdom and was published in Nature (Clarke, 1986;Davies, 1986;Kiernan, 1986;McLaren, 1986aMcLaren, , 1987. This timing provides a good example of how sociopolitical considerations may have influenced the emergence of this term in the scientific community-a fact that also was recognized by some of its principal driving forces (McLaren, 1986b).…”
Section: Introductionmentioning
confidence: 91%
“…These arguments could explain why there is a period of almost seven years between the first (Grobstein, 1979) and the second (Yu & Chan, 1986) article in which the term preembryo was used. This second reference coincided with a long debate that followed the statements made by the Warnock Commission (Warnock, 1984) in the United Kingdom and was published in Nature (Clarke, 1986;Davies, 1986;Kiernan, 1986;McLaren, 1986aMcLaren, , 1987. This timing provides a good example of how sociopolitical considerations may have influenced the emergence of this term in the scientific community-a fact that also was recognized by some of its principal driving forces (McLaren, 1986b).…”
Section: Introductionmentioning
confidence: 91%
“…Traditionally, however, these embryological features were not considered sufficiently distinctive to bestow upon this 14-day period a separate classification. This situation changed when, in 1986, McLaren proposed the term ''pre-embryo'' to designate ''the entire product of the fertilized egg up to the end of the implantation stage''; and the term ''embryo'' for ''that small part of the pre-embryo or conceptus, first distinguishable at the primitive streak stage, that later develops into the foetus'' (McLaren, 1986a). Although this debate is embedded within ethical discussion, it has a distinctively embryological focus.…”
Section: Pre-embryo Conceptmentioning
confidence: 98%
“…Recent usage of this term stems from the argument that it is not until about 16 days after fertilization that all cells derived from the fertilized egg are finally committed to being part of either the individual embryo or the trophectodermal support tissues (McLaren, 1986a). Prior to this, the later easily recognizable embryo consists of nothing more than a tiny subset of the mass of cells generated by the fertilized egg (McLaren, 1986b).…”
Section: Pre-embryo Conceptmentioning
confidence: 98%
“…Segundo ela, o que existiria antes do surgimento da linha primitiva no 14º dia seria uma "massa de células gerada pelo ovo fertilizado"; apenas após 14 dias "pode-se dizer que começou o desenvolvimento embrionário individual" (McLaren apud Mulkay 1994a). Para designar o embrião neste estágio inicial, ela introduziu a categoria "pré-embrião" (McLaren 1986). 3 O lobby pró-pesquisa passou a contar, a partir daí, com um vocabulário através do qual poderia argumentar no mesmo terreno da oposição: o do estatuto ontológico do embrião.…”
Section: O Human Fertilisation and Embriology Bill (Hfeb)unclassified