part of part of diencephalon diencephalic nucleus ventro-rostral cluster vrc Early-forming neural cluster located in the rostral diencephalon. At 19 h, axons arising from the vrc grow caudally to pioneer the tract of the postoptic commissure (TPOC). Ross et al., 1992. ventrorostral cluster This class was sourced from an external ontology (teleost_anatomy). Its definitions, naming conventions and relationships may need to be checked for compatibility with uberon UBERON:2007002 ZFA:0007002