Rabbit polyclonal antibody against the green fluorescent protein (GFP) conjugated with AlexaFluor 488 was purchased from Molecular Probes (Eugene, OR, USA; Catalog No. A21311). This antibody was raised against GFP isolated directly from Aequorea victoria and has been previously characterized by immunocytochemistry in granule cells [46 (link)], olfactory sensory neurons [47 (link)], and hippocampal neurons that express GFP [48 (link)]. An anti-RBPMS (RNA-binding protein with multiple splicing) antibody was purchased from PhosphoSolutions (Aurora, CO, USA; Catalog #: 1832-RBPMS). This polyclonal antibody was raised in guinea pigs against a synthetic peptide corresponding to amino acid residues from the N-terminal region of the rat RBPMS sequence conjugated to KLH. This antibody has been characterized by Western blotting and verified with immunocytochemistry on mammalian retinas and demonstrated to be a specific pan-RGC marker which labels all RGCs but not any other cells in the retina [49 (link),50 (link),51 (link)]. The secondary antibodies were purchased from Jackson Immune Research Laboratories (West Grove, PA, USA).
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