Free Art for Posters and Talks

What about when you are just so sure that if only you had the perfect picture, your work would be so much clearer?  But somehow, even all the googling and AI can't seem to give you what you need without watermarks or fees?  

With thanks to Rafeeque Mavoor, here is a list of websites that might have just what you need to add the crowning touch to your communications. Take a look, and see what you could use--with proper credit of course.

1.  Openscienceart.com - free images, scientific icons

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2.  Art from the NIH - bioart.niaid.nih.gov - cells, viral particles, organs

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3.  Bioicons - bioicons.com  - molecular biology icons, hi res

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4.  Scidraw.io - vector images of lab equipment, cell structures, eppendorf tubes, and biology

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