Hormone invertebrate, table

Hormones of insects and crustaceans. Peptide neurohormones of insect brains348 include the pentapeptide proctolin (Table 30-5), which was first iso-lated from the cockroach and has since been found in crustaceans and in mammalian brain. It has been traced to specific insect neurons.349 A nonapeptide neurohormone from the shore crab does not resemble any other known vertebrate or invertebrate hormone.350... 

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