A team of researchers led by the Spanish scientist Juan Carlos Izpisúa has created 132 human-monkey embryos in a laboratory in China, in a controversial experiment first revealed by EL PAÃS in the summer of 2019 and now officially published in detail.
Three of the embryos, which grew to contain up to 10,000 cells, developed for 19 days outside the uterus, at which point the researchers interrupted the study, they said in an article published by the scientific journal
Cell on April 15. Scientists use the term âchimeraâ from Greek mythology to refer to these hybrids, in reference to a creature with the head of a lion, a goatâs head on its back and a snakeâs head for a tail.
José Polo: Human pseudo-embryos created from skin cells present ethical minefield | USA
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What similarities between the famous writers reveal about mysteries of authorship
WILLIAM SHAKESPEARE and Miguel de Cervantes, two of the most important writers of literature, are surrounded by a halo of mystery related to authorship.
In the case of Shakespeare, the question of whether he is the true author of his plays has circulated for some time. In the case of Cervantes, mysteries about authorship tend to concern who wrote the sequel to the first part of
Don Quixote, one of the earliest modern novels.
Cervantes published the first part of
Don Quixote in 1605. In 1614, an unofficial sequel by the pseudonymous Alonso Fernández de Avellaneda was published. In response, a year later, Cervantes published his sequel to