Biological Mass Spectrometry at Oak Ridge National Laboratory. Original public domain image from Flickr https://www.rawpixel.com/image/8732182/photo-image-public-domain-medicalFree Image from public domain licenseA scientist preparing samples for mass spectrometry in order to determine the presence of a bacterial toxin. https://www.rawpixel.com/image/2288538/free-photo-image-spectrometry-pipette-bacterial-toxinFree Image from public domain license