A pair of studies raises ethical and legal questions about the status of lab-grown human embryo models.
. Human embryo models haven’t got that far, but in a preprint posted to bioRxiv on 17 May, stem-cell biologist Ali Brivanlou and coworkers at the Rockefeller University in New York reported human embryo models that show signatures of gastrulation equivalent to around 12 days after fertilizationWhat is the significance of the embryos lasting for 14 days?
But because in most countries embryo models do not meet the formal definition of an embryo, they are not subject to such restrictions. “We sought to develop a tool to ask specific questions about the second week of human embryo development, since using actual human embryos in research is ethically and technically challenging”, says Zernicka-Goetz.
It remains to be seen whether the claims of the new studies, neither of which has yet been peer-reviewed, will pass muster. Alfonso Martinez Arias, a developmental biologist at Pompeu Fabra University in Barcelona, Spain, says there is “nothing” in the results described by Zernicka-Goetz and colleagues that can be considered analogous to real 14-day embryos. “What we can see is masses of cells separated into compartments, but no embryo-like organization.
Argentina Últimas Noticias, Argentina Titulares
Similar News:También puedes leer noticias similares a ésta que hemos recopilado de otras fuentes de noticias.
Influencers Don’t Have to Be Human to Be BelievableVirtual social-media influencers can be as equally credible as human influencers for certain kinds of posts, a study finds.
Leer más »
A.I. human-voice clones are coming for the Amazon, Apple, Google audiobookAudiobook sales are growing, and while human voice is unique, for platforms from Apple to Google and Amazon, AI will play a role in the future of production.
Leer más »
Indictment: PA Man Bought Human Remains in Alleged Trafficking RingA man with what appear to be metal spikes implanted in his scalp is one of seven charged with trafficking human remains, including two stillborn infants.
Leer más »
AI-generated human voice clones are narrating audiobooksInsider tells the global tech, finance, markets, media, healthcare, and strategy stories you want to know.
Leer más »
New Grammy rule addresses artificial intelligence, says 'only human creators' eligible for awardsThe Recording Academy is making several changes to the Grammy Awards, including a rule that stipulates 'only human creators' can win the music industry's highest honor in a decision aimed at the use of artificial intelligence in popular music.
Leer más »
Biologists create detailed lab replicas of early human embryosBiologists trying to create laboratory models of the early growth of a human embryo have taken a major step forward.
Leer más »