platelet dense granule lumen
cytoplasmic vesicle lumen that is part of some secretory granule
SubClassOf(<http://purl.obolibrary.org/obo/GO_0031089> ObjectIntersectionOf(<http://purl.obolibrary.org/obo/GO_0060205> ObjectSomeValuesFrom(<http://purl.obolibrary.org/obo/BFO_0000050> <http://purl.obolibrary.org/obo/GO_0030141>)))
EquivalentClasses(<http://purl.obolibrary.org/obo/GO_0034774> ObjectIntersectionOf(<http://purl.obolibrary.org/obo/GO_0060205> ObjectSomeValuesFrom(<http://purl.obolibrary.org/obo/BFO_0000050> <http://purl.obolibrary.org/obo/GO_0030141>)) )