Islet of Langerhans, duct, blood vessel
In science class, you always wished you could play with the microscope a little bit longer. Now that you are an adult, you actually can. Cooler and with more bang for your buck than r/telescopes, microscopy lets you do real science!Red blood cells in a capillary

In science class, you always wished you could play with the microscope a little bit longer. Now that you are an adult, you actually can. Cooler and with more bang for your buck than r/telescopes, microscopy lets you do real science!