Introduction to the Issue on Biophotonics—Part 1

The 23 papers in Part 1 of this special issue on biophotonics can be divided into the following sections: advanced bioimaging and microscopy; novel approaches in biophotonic diagnostics and therapeutics; multimodal biosensing techniques; advanced nanobiophotonics; and novel laser, fiber-optic, and electro-optic biophotonic tools and devices.