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A New Look at Evidence Against Lab Tech, But No Light Shed on Murder Motive

The New York Times has an update on the laboratory technician charged with the murder of Annie Le, the Yale graduate student killed in September. According to police, Raymond Clark III allegedly "tried to conceal blood-splattered tissues from university detectives." Police affidavits were released today, revealing that "investigators who went through the lab building discovered a sock with two batches of DNA — his and hers — with her body. The sock was 'similar' to another sock concealed in a ceiling panel where they found blood work boots labeled 'Ray-C.' The investigators also concluded that there had been blood on a wall in the lab, but that it had been washed off," the article says.

Despite the DNA and other evidence, however, the story says that Clark has been refusing to answer questions about the strangling. "Chief James Lewis of the New Haven police said detectives might never be able to piece together the story behind the slaying or explain the motive, a gap that physical evidence alone could not fill in," the article says.

The Scan

mRNA-Based Vaccine on the Way in China

China may soon have its own mRNA-based vaccine, according to Nature News.

Arranged Killing, Fraud Alleged by Prosecutors

The Wall Street Journal reports that prosecutors allege that the co-founder of a biotech arranged to have a business associate who threatened to expose him as a fraud killed.

Whirlwind Decade of CRISPR

The New York Times looks back at the 10 years since the University of California, Berkeley's Jennifer Doudna and her colleagues published their CRISPR paper.

PNAS Papers on Blue Cone Monochromacy Structural Variants, HIV-1 Mutant, T-ALL

In PNAS this week: structural variants linked to blue cone monochromacy, HIV-1 variants affecting the matrix protein p17, and more.