Coleps: The PiraƱa of the ciliates

One of the most deadly ciliates that can even take on larger predatory ciliates like Didinium is Coleps. These are barrel-shaped ciliates with characteristic plate-like structures. They often hunt in packs and clean up dead ciliates or weakened ones. I have been inadvertently growing Coleps, while studying interactions between Didinium (the T-Rex of the ciliate…

Rheinberg illumination for Foldscope

123 years ago Julius Rheinberg invented a variation of the darkfield microscope by adding color to it. Essentially it involved using various combinations of transparent colored papers set up in a way where diffracted light would be of one color and the direct light falling on the object of another. Typically annular rings are made…