Figure 1: Immunohistochemistry stain of astrocytes (Oksanen, 2017, Stem Cell Reports). In the late 19th century, Santiago Ramón y Cajal aided in the formation of the neuron doctrine, a theory which used evidence from neuronal staining techniques to confirm that neurons are each separate entities and not one continuous fusion of cells. These separations allow … Continue reading Don’t forget about the stars in your brain!