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Hydra

Hydra vulgaris

Kiumbe mdogo wa maji baridi wa kundi la cnidaria. Anadhibitiwa na mtandao wa neva uliotawanyika na hana ubongo.

Niuroni
takriban 3,000 hadi 5,000 makadirio · mtandao mzima wa neva; hakuna idadi kamili
Bode H, Berking S, David CN, Gierer A, Schaller H, Trenkner E (1973) Quantitative analysis of cell types during growth and morphogenesis in Hydra. Wilhelm Roux Arch Entwickl Mech Org 171(4):269-285. doi:10.1007/BF00577725.

Ushahidi

  • Tabia yake (kujikunja, kula, kupinduka) huendeshwa na mtandao wa neva usio na ubongo. Upigaji picha wa kalsiamu wa mnyama mzima umechora makundi yake ya niuroni.
    Dupre C, Yuste R (2017) Non-overlapping neural networks in Hydra vulgaris. Curr Biol 27(8):1085-1097. doi:10.1016/j.cub.2017.02.049.