part of ends during starts during death tissue olfactory bulb external plexiform layer of the olfactory bulb xenopus_anatomy XAO:0004551 UBERON:0005376 Cytoarchitectural part of the olfactory bulb, lying superior to the mitral cell layer and inferior to the glomerular layer. The EPL is mostly neuropil composed almost entirely of mitral and tulfted cell dendrites and granule cell dendrites and their synaptic inputs. NF stage 26