Slice incubation chamber insets

### Slice incubation chamber insert for electrophysiology.
A handy insert that can be used in combination with regular 200mL beakers to incubate slices for electrophysiology. To use, glue netting to the bottom of the holding part (either specialized slice netting or from netted cloth, e.g. pantyhose) and trim the flanges for a snug fit in your beaker. Medium versions should work with any beaker with an inner diameter between 54 to 64mm, while the "Large" version is designed for beakers of 82mm