Medical research

Chemical tag marks future microRNAs for processing, study shows

Just as two DNA strands naturally arrange themselves into a helix, DNA's molecular cousin RNA can form hairpin-like loops. But unlike DNA, which has a single job, RNA can play many parts—including acting as a precursor ...

Oncology & Cancer

How untying knots promotes cancer

Researchers have long known that high levels of a specific protein in human cells are linked to tumor growth – but no one has fully understood how.

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