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Sensitive mass spectrometry and innovative cell-sampling techniques allow researchers to profile metabolites in single cells, but the field is still in its infancy.
Numerous variables can torpedo attempts to replicate cell experiments, from the batch of serum to the shape of growth plates. But there are ways to ensure reliability.
Structural biologists are at last living the dream of visualizing macromolecules to uncover their function. But it means integrating different technologies, and that's no easy feat.
Scientists are uncovering the hidden switches in our genome that dial gene expression up and down, but much work lies ahead to peel back the many layers of regulation.
Research into ageing requires patience, but a small cadre of scientists is angling to speed up answers by developing the flamboyant, short-lived turquoise killifish as a new model.
Liquid biopsies can detect cancer signs from a blood sample, without the need for invasive procedures. But further work is needed before they can become reliable diagnostic tools.
Scientists are designing cells that can manufacture drugs, food and materials — and even act as diagnostic biosensors. But first they must agree on a set of engineering tools.
Drug discovery is a daunting process that requires chemists to sift through millions of chemicals to find a single hit. DNA technology can dramatically speed up the search.