Wiebke Dresp

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Wireless communication demands for specialized protocols secure against attacks on the radio path while fitting the limited calculation and memory capabilities of mobile terminals. To ensure accessibility of mobile services beyond a user's home network, signing on a foreign network should be possible. The latter must be able to authenticate a user without(More)
Growth cones of differentiated neuroblastoma cells in monolayer cultures were studied by electron microscopy. Morphological differentiation of the growth cone formation was induced by sodium bromide. Upon prolonged application of 10(-4) to 10(-5) M sodium bromide to the cultures, a peculiar or modified formation of the growth cone occurred. Growth cones(More)
Cultured murine neuroblastoma cells contain an extensive smooth endoplasmic reticulum (SER), also within their numerous processes and their terminals, consisting of a complex network of sacs and tubules. Both the perikaryal and the SER found within the processes and endings resemble one another morphologically. From the SER whether it is within the(More)
Neuroblastoma cells grown on substrates in culture develop long processes and assume the morphology of normal neurons as judged light microscopically. The development of synapses in the cultured tissue is studied by periodic electron microscopic examination of the areas of contact between cells. The initial explants are free of any apparent synaptic(More)
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