Centers for Disease Control and Prevention (CDC) 35d ago

This video demonstrates the four-quadrant streak method used in microbiology laboratories to isolate individual bacterial colonies from a mixed culture specimen. It covers the materials and safety precautions required, as well as the step-by-step streaking technique needed to achieve proper colony isolation for further testing. This video can also be viewed at https://www.cdc.gov/lab-training/videos/4-quadrant-streak/bcmit-mc-1280x720.mp4