Spot by Spot | The work shows the MALDI spotting process. A liquid proteomic sample is spotted on a metal target. The drop is allowed to dry and can be analyzed by mass spectrometry. The image’s shallow field of depth was chosen to focus the observer’s view. Entering at the pipette tip, the color key drives the observer to hop from spot to so he can analyze the image as the samples are analyzed in the mass spectrometer: Spot by Spot.