Bipolar cells
Bipolar cells receive electrical signal from the photoreceptors and pass these onto the ganglion cells. Their cell body is situated in the inner nuclear layer. There are at least 13 different kind of bipolar cells, each systematically modify the signal sent by the photoreceptors (Euler et al., 2014).
Antibodies that label the Bipolar cells
References
Euler T, Haverkamp S, Schubert T, Baden T. 2014. Retinal bipolar cells: elementary building blocks of vision.Nature Reviews Neuroscience. 15:507-519.