First a synthetic genome, and now plastic antibodies: Scientific American's Observations blog reports that researchers from Japan, Stanford University, and University of California, Irvine, have develop plastic antibodies that work like real antibodies, latching onto antigens. The nanoparticles are "barely 1/50,000th the width of a human hair," the blog's Katie Moisse says.

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CNN reports that researchers have tied a new variant to opioid addiction risk.

Organoids derived from patients' tumors may help determine what chemotherapy treatment patients would benefit from, according to New Scientist.

An initiative from GenomeAsia 100K hopes to increase the number of South Asians in genetic research, according to NBC News.

In Science this week: genomic analysis of ancient and modern horses indicates population turnover, and more.