In a new study in Nature Biotechnology, Harvard University researchers describe how they've bioengineered an artificial jellyfish using heart cells from a rat, reports Ed Yong at Nature News. The result — a synthetic creature called a medusoid — is morphologically a jellyfish and genetically a rat.

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The US Food and Drug Administration has approved Kite Pharmaceuticals' CAR T-cell therapy for large B-cell lymphomas, the New York Times reports.

Kaiser Health News reports that gene therapies could cost more than a million dollars.

Worcester Polytechnic Institute researchers have received a grant to combine biology and computer science for high school students.

In Nature this week: variants associated with obsessive-compulsive disorder, review of key CRISPR enzymes, and more.