A modular multi-color fluorescence microscope for simultaneous tracking of cellular activity and behavior.

Area of Science:

• Biophysics
• Microscopy
• Neuroscience

Background:

• Advanced microscopy techniques are crucial for observing dynamic biological processes in vivo.
• Existing systems can be expensive and complex, limiting accessibility for research and education.

Purpose of the Study:

• To present a modular, affordable, and rapidly assembled epifluorescence tracking microscope.
• To demonstrate its utility across diverse biological imaging applications, including neuroscience and developmental biology.

Main Methods:

• Assembly of a modular microscope using commercially available components within 3 hours.
• Application of ratiometric and dual-color fluorescence imaging techniques.
• Utilizing genetically encoded indicators and fluorophores for enhanced signal and reduced photobleaching.

Main Results:

• Successful calcium imaging of neurons in behaving Caenorhabditis elegans.
• Analysis of muscle dynamics in Drosophila melanogaster larvae.
• Visualization of predatory nematode-prey interactions using dual-color fluorescence.
• Demonstration of brightfield imaging for tardigrade gait analysis.

Conclusions:

• The presented microscope is a broadly accessible, cost-effective tool for live-animal imaging.
• Its modularity and ease of use support diverse research applications and educational purposes.
• The system facilitates advanced imaging of neural activity, muscle function, and ecological interactions.