Ghost of Experiments Past
In our lab, we inject ferrofluid into tissue to measure its material properties. Here, we attempted to inject into a dissected mouse tissue that had its cells fluorescently labeled. Usually, the drop stays in the tissue, but this time it leaked out, giving rise to this eerie blue specter.
This image was an experiment gone wrong. Usually, the ferrofluid droplet stays within the tissue when injected but this time it leaked. The ferrofluid used contained a dye that allowed us to visualize it. The tissue in the image actually started to disintegrate due to it being excised from the mouse by a collaborator hours beforehand. The tissue of this mouse was labelled by green and red fluorescent protein. The image was captured as the ferrofluid was leaving the tissue.