Under $50 smartphone fluorescence microscope developed

https://phys.org/news/2023-03-low-cost-smartphone-fluorescence-microscope.html

"glowscope of plexiglass and plywood frame, clip-on camera lens, LED torch, and theater stage lighting filters... 5X magnification capable of imaging green and red fluorescent tissues with up to 10 mn resolution... image cells, tissues, and organisms under low magnification in schools, science outreach and research labs"

Related:

Technology enables conversion of mobile phone cameras into high-resolution microscopes

https://phys.org/news/2023-05-technology-enables-conversion-mobile-cameras.html

New high-speed, two-photon microscope for precise biological imaging

https://phys.org/news/2023-05-high-speed-two-photon-microscope-precise-biological.html