En utilisant des cellules souches embryonnaires de singe, des scientifiques ont créé des spermatozoïdes fonctionnels chez un animal étroitement apparenté à l'homme.
Le fait de manger les aliments des jours en une seule fois et de jeûner le reste du temps offre aux souris les mêmes avantages que la restriction calorique.
Pfizer et son partenaire européen BioNTech ont demandé au gouvernement américain d'étendre l'autorisation d'urgence pour permettre à toute personne de plus de 18 ans de recevoir son rappel de COVID-19.
Une nouvelle étude révèle que les hommes noirs, hispaniques et asiatiques sont moins susceptibles que les hommes blancs de recevoir une IRM de suivi après un dépistage suggérant un cancer de la prostate.
La société pharmaceutique Regeneron indique qu'un essai clinique montre qu'une dose de son anticorps réduit de 81,6 % les risques de contracter le COVID-19 chez une personne non infectée, et ce jusqu'à huit mois après la prise du médicament.
Les républicains et les personnes non vaccinées sont plus susceptibles d'avoir des idées fausses sur la pandémie ou les vaccins ; la différence dépend en partie des sources d'information auxquelles les gens font confiance.
Sur une base individuelle, il n'est pas facile de répondre à la question du degré et de la durabilité de l'immunité qu'une personne obtient après une vaccination contre une infection. Mais c'est une question à laquelle la science s'intéresse de près.
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