lymph gland

From ZooTerms (Dictionary of Invertebrate Zoology)
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lymph gland: 1. (Annelida: Oligochaeta) Organs on the anterior faces of septa associated with the dorsal blood vessel, in the intestinal regions of some earthworms, possibly functioning in production of phagocytes.

2. (Arthropoda: Insecta) Organs that release free mesodermal cells into the hemolymph near pupation of Drosophila larvae.