# Mirror Molecule Shows Promise Starving Cancer Cells While Sparing Healthy Tissues - slug: mirror-molecule-shows-promise-starving-cancer-cells-while-sparing-healthy-tissues - date: 2026-03-13 - category: Biotech & Life Sciences University of Geneva researchers have discovered that D-cysteine — a mirror-image version of the amino acid cysteine — can selectively slow cancer growth by targeting a specific transporter found only on certain ---