Genes are switched on in the human embryo from the get-go

The finding that some genes are active from the get-go challenges the textbook view that genes don't become active in human embryos until they are made up of four-to-eight cells, two or three days after fertilization.

New prime editing system inserts entire genes in human cells

Researchers at the Broad Institute of MIT and Harvard have developed a new version of prime editing that can install or swap out gene-sized DNA sequences. First developed in 2019, prime editing is a precise method of making ...

How some tissues can 'breathe' without oxygen

Humans need oxygen molecules for a process called cellular respiration, which takes place in our cells' mitochondria. Through a series of reactions called the electron transport chain, electrons are passed along in a sort ...

Host immunity drives viral evolution of dengue

New research by a team of University of Florida investigators, and others, provides evidence that host immunity drives evolution of the dengue virus. The work, published today in Science, retrospectively analyzes two decades ...

Woodrat microbiomes: It's who you are that matters most

Every mammal hosts a hidden community of other organisms—the microbiome. Their intestines teem with complex microbial populations that are critical for nutrition, fighting disease and degrading harmful toxins. Throughout ...

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