WordNet

lacking a backbone or spinal column; "worms are an example of invertebrate animals" (同)spineless
any animal lacking a backbone or notochord; the term is not used as a scientific classification
the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect (同)endocrine, internal_secretion

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Shigeno S1, Ragsdale CW.
The Journal of comparative neurology.J Comp Neurol.2015 Feb 3. doi: 10.1002/cne.23755. [Epub ahead of print]
The cephalopod vertical lobe is the largest learning and memory structure known in invertebrate nervous systems. It is part of the visual learning circuit of central brain, which also includes the superior frontal and subvertical lobes. Despite the well-established functional importance of this syst
PMID 25644267

Pennisi E.
Science (New York, N.Y.).Science.2015 Jan 16;347(6219):220-1. doi: 10.1126/science.347.6219.220.
PMID 25593165

Ernst UR1, Van Hiel MB1, Depuydt G1, Boerjan B1, De Loof A1, Schoofs L2.
The Journal of experimental biology.J Exp Biol.2015 Jan 1;218(Pt 1):88-99.
Insects are one of the most successful classes on Earth, reflected in an enormous species richness and diversity. Arguably, this success is partly due to the high degree to which polyphenism, where one genotype gives rise to more than one phenotype, is exploited by many of its species. In social ins
PMID 25568455

Development of a time-resolved fluoroimmunoassay for octopus gonadotropin-releasing hormone

Characterization and Analysis of Novel Carboxyl/Cholinesterase Genes Possessing the Thr-316 Motif in the Silkworm, Bombyx mori

TSUBOTA Takuya,NAKAKURA Takayo,SHINODA Tetsuro,SHIOTSUKI Takahiro
Bioscience, biotechnology, and biochemistry 74(11), 2259-2266, 2010-11-23
… Juvenile hormone esterases (JHEs) function in juvenile hormone (JH) degradation. …
NAID 10027561554