Herbert Schweizer

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The paralemniscal tegmental area has been determined in the brain of the New World moustached bat, Pteronotus p. parnellii, by electrical microstimulation eliciting echolocation calls and pinna movements. It is located in the dorsal tegmentum rostral and medial to the dorsal nucleus of the lateral lemniscus and is characterized by medium sized and large(More)
The connections of the inferior colliculus, the mammalian mid-brain auditory center, were determined in the greater horseshoe bat (Rhinolophus ferrumequinum), using the horseradish peroxidase method. In order to localize the auditory centers of this bat, brains were investigated with the aid of cell and fiber-stained material. The results show that most(More)
Ammonium humate, isolated from peat water, is a higher molecular polyphenolic compound with a strong antiviral activity against herpes simplex virus type 1 and type 2. Three cell lines were chosen for examining the cytotoxicity of ammonium humate: rabbit kidney primary cells, HEp-2- and FL-cells. As the light microscopic examination of both, the monolayers(More)
We analyzed the long-term consequences of asphyxial cardiac arrest for hippocampal cell proliferation in rats to evaluate if the ischaemia-induced degenerated CA1 region may be repopulated by endogenous (stem) cells. Studies were performed in an asphyxial cardiac arrest model with 5 minutes of asphyxiation and three different survival times: 7, 21, and 90(More)
The motoneurons innervating the laryngeal muscles were localized in the rufous horseshoe bat, Rhinolophus rouxi, using the HRP method. HRP was applied to the cricothyroid muscle and to the cut end of the recurrent laryngeal nerve. Labeled motoneurons were found in two completely separated regions of the nucleus ambiguus. The motoneurons innervating the(More)
Using a novel positive selection method for G3P transport activity, λ phages that carry either all or part of ugp, the genes of the pho regulon-dependent G3P transport system of Escherichia coli were isolated from a library of EcoRI fragments of Escherichia coli established in λgt7. By subcloning EcoRI fragments carried by the different phages into the(More)
After immunization with autologous testicle cells which were infected with herpes virus hominis type 1 or 2, histologically homogeneous, eosinophilie PAS-positive substances could be detected in five out of six rabbits, mainly within the interstitium. These substances have been found by immunofluorescence microscopic techniques to be antibodies against(More)
Ammonium humate (prepared from marsh water humic acids) as well as enzymically oxidized diphenolic compounds such as the oxidation products of chlorogenic and caffeic acids have strong antiviral activities in vitro. The effective concentrations lie considerably outside the cytotoxic range of the compounds mentioned.