Vero cells are a particular kind of kidney monkey cells. Here they have been infected by a herpes virus that carries a "brainbow cassette," which makes cells express proteins that are tagged with a variety of fluorescent colors.
This rainbow of colors helps us identify and analyze individual neurons (the core components of the body's nervous system), thus allowing us trace neural circuits.
– Jess Brooks, Esteban Engel and Lynn Enquist
Jess Brooks '13, Esteban Engel (postdoc), and Lynn Enquist (faculty), Department of Molecular Biology and the Princeton Neuroscience Institute