====== Instruments ====== <cri_photo_thumb stock_photo:labs:biotech:instruments:purification | stock_photo:labs:biotech:instruments:purification.jpg | Chemical purification > <cri_photo_thumb stock_photo:labs:biotech:instruments:extraction | stock_photo:labs:biotech:instruments:extraction.jpg | DNA extraction > <cri_photo_thumb stock_photo:labs:biotech:instruments:experiments | stock_photo:labs:biotech:instruments:experiments.jpg | Experiments >