This image above is of a mixture of blood and presumably skin tissue. The majority part of the slide seems red, with a web-like structure underneath, like the same structure that can be observed with pure skin tissue under the foldscope. The red hue is caused by the red blood cell.

The sample is obtained from Becca Mincofsky’s arm, around 11:30 5/29. She had a minor injury on her arm which was bleeding. The sample is gathered by pressing a clean slide against her wound and smear the sample across the slide. Becca is a student in Ricketts Hovse, Caltech.

This observation is conducted with the cooperation with Becca Minkofsky, Shubh Agrawal, and Sophie Howell. The sample is generously donated by Becca Mincofsky. Thank you guys.

Although the observation is quite fun, there is certain risk in a task like this. We would like to warn any users of the foldscope community against harming others or themselves on purpose.

#caltechbi1