Counting bacteria colonies on a petri dish
A hand holding a pen over a petri dish seen through a magnifier at a microbiology laboratory, used to count colonies of bacteria.
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- By
- William C. Shrout
- Licence
- Public domain (opens in a new tab): free for any use, including commercial
- Source
- Wikimedia Commons (opens in a new tab)
- Tags
- biology, microbiology, petri dish, bacteria, laboratory
Credit (appreciated, not required)
Photo: William C. Shrout via Pixy (https://pixy.org/5778820/)







