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pro vyhledávání: '"Stefan Berking"'
Anna Freud (1895-1982) in einem Brief an den Autor: „… Ich bin Ihren Gedankengängen mit großem Interesse und Respekt gefolgt und konnte feststellen, dass Sie in keine der Abwege und Fallen gegangen sind, in die sich sonst diejenigen verirren, d
Autor:
Stefan Berking, Klaus Herrmann
Publikováno v:
Open Life Sciences, Vol 5, Iss 5, Pp 710-723 (2010)
When all the cells of a tube are identical, they are unlikely to control how many of them are present in the circumference. However, when the circumference is subdivided into at least two regions of different cells, the tube diameter can be controlle
Publikováno v:
Open Life Sciences, Vol 4, Iss 4, Pp 549-557 (2009)
The fresh water polyp Hydra is noted for its ability to regenerate missing body parts. Transplantation experiments indicate that the control of regeneration includes signalling over long distances. These signals appear to include diffusible morphogen
Autor:
Stefan Berking, Klaus Herrmann
Publikováno v:
The International Journal of Developmental Biology. 51:221-228
Polyps of Scyphozoa have a cup-shaped body. At one end is the mouth opening surrounded by tentacles, at the other end is an attachment disc. The body wall consists of two tissue layers, the ectoderm and the endoderm, which are separated by an extrace
Autor:
Klaus Herrmann, Stefan Berking
Publikováno v:
Helgoland Marine Research. 60:180-188
Cnidaria catch and kill their prey by means of nematocysts. A nematocyst consists of a capsule con- taining a coiled tubule. On triggering, the cyst extrudes this tubule in an extremely rapid manner. The mecha- nisms and driving forces of discharge a
Autor:
Guy Sekul, Klaus Herrmann, Melanie Gerharz, Andrea Sommerei, Fritz Vedder, Barbara Siefker, Stefan Berking, Uwe Hoffmann, Nicole Czech, Hartmann Raifer
Publikováno v:
The International Journal of Developmental Biology. 49:969-976
In Aurelia aurita, applied iodine induces medusa formation (strobilation). This process also occurs when the temperature is lowered. This was found to increase oxidative stress resulting in an increased production of iodine from iodide. One polyp pro
Autor:
Stefan Berking, Stefanie Zeretzke
Publikováno v:
Development, Growth and Differentiation. 44:85-93
Hydra consist of three self-renewing cell lineages: the ectodermal epithelial, endodermal epithelial and interstitial cell lineages. The role of these cell lineages in head formation and foot regeneration in Hydra magnipapillata was studied by compar
Publikováno v:
Helgoland Marine Research. 54:230-236
Larvae of cnidarians need an external cue for metamorphosis to start. The larvae of various hydrozoa, in particular of Hydractinia echinata, respond to Cs+, Li+, NH4+ and seawater in which the concentration of Mg2+ ions is reduced. They further respo
Publikováno v:
Quantitative Structure-Activity Relationships. 19:227-236
Autor:
Stefan Berking, Michael Kroiher
Publikováno v:
Helgoland Marine Research. 53:118-121
Hydractinia echinata and Aurelia aurita produce motile larvae which undergo metamorphosis to sessile polyps when induced by external cues. The polyps are found at restricted sites, A. aurita predominantly on rocks close to the shore, H. echinata on s