- Eachtentacleisabouttwomillimeterslong.ConstructionofcDNAlibraryofthetentacleofHelixaspersaIseeDraeni(whoIpredicted)whonowlooklikebluehandsometentaclepeople.Asensoryortactileorgan,suchasanantenna,atentacle,orabarbel.Eachtentaclehas5,000stingingcellsan...
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