part of part of located_in embryo ventricular system of central nervous system future brain open anatomical space future brain vesicle UBERON:0013150 TODO - resolve space vs structure inconsistency; consider adding all secondary vesicles (e.g. diencephalic; my/metencephalic. See http://www.dartmouth.edu/~rswenson/NeuroSci/chapter_4.html). Note that some sources may treat the term vesicle as the progenitor of the whole brain region; for example 'The retina develops directly from the neural tube as an outpouching from the diencephalic vesicle' early brain vesicle secondary brain vesicle primitive brain vesicle brain vesicle primary brain vesicle uberon