axon synapses in expresses expresses retinal bipolar neuron cone retinal bipolar cell type 2 cone bipolar cell (sensu Mus) FMB cone bipolar cell An OFF-bipolar neuron found in the retina and having connections with cone photoreceptors cells and neurons in the outer half of the inner plexiform layer. The dendritic tree is not well filled and the dendrites are more delicate than in type 1 cells. The axon terminal is bushier and exhibits a dense plexus of varicosities in the inner part of sublamina 1 (Ghosh et al., 2004). It can be differentiated from other retinal bipolar neurons by its expression of marker genes: Neto1, Lhx3 and Irx-6 (Shekhar, 2016). LIM/homeobox protein Lhx3 (mouse) neuropilin and tolloid-like protein 1 (mouse) iroquois-class homeodomain protein IRX-6 (mouse) sublaminar layer S1