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Synthetic Biology Rolls Along

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. The researchers used molecular imprinting to create melittin-shaped craters in small plastic dots, Moisse writes. After injecting mice with a lethal dose of melittin, the researchers then injected the mice with the plastic antibodies, which diminished the toxicity of the melittin. The researchers suggested the plastic antibodies could also be used to fight many different antigens, Moisse adds.

The Scan

Fertility Fraud Found

Consumer genetic testing has uncovered cases of fertility fraud that are leading to lawsuits, according to USA Today.

Ties Between Vigorous Exercise, ALS in Genetically At-Risk People

Regular strenuous exercise could contribute to motor neuron disease development among those already at genetic risk, Sky News reports.

Test Warning

The Guardian writes that the US regulators have warned against using a rapid COVID-19 test that is a key part of mass testing in the UK.

Science Papers Examine Feedback Mechanism Affecting Xist, Continuous Health Monitoring for Precision Medicine

In Science this week: analysis of cis confinement of the X-inactive specific transcript, and more.