This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Agar plate. Red blood cells on an agar plate are used to diagnose infection The plate on the left shows positive staphyloccus infection The plate on the right shows positive streptococcus infection and with the halo effect shows specifically betahemolytic group Both plates are being held by gloved technicians hands These infections