embryonic/larval lymph gland tertiary lobe of embryonic/larval lymph gland posterior lymph gland pair tertiary lobe Pair of lymph gland lobes posterior to the secondary lobes. Unlike the more anterior lobes, these are small and elongate. The tertiary lobe is composed of prohemocytes. There may be multiple pairs of these lobes. fly_anatomy.ontology FBbt:00001671