part of develops from develops into Malpighian tubule primordium developing embryonic structure late extended germ band embryo dorsal closure embryo primordium Malpighian tubule tip cell primordium P1 MalTT fly_anatomy.ontology FBbt:00005502 A(n) primordium that develops into some embryonic Malpighian tubule tip cell. It develops from some Malpighian tubule primordium. Malpighian tubule tip cell specific anlage embryonic Malpighian tubule tip cell posterior ectoderm derivative