Dr. Esteban M. Rodríguez

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The structural organization of the rostral, lateral and postinfundibular regions of the median eminence (ME) of 5-day cyclic diestrous rats was studied with light and electron microscopic methods. The ependymal cells lining (i) the floor of the infundibular recess (IR) at rostral levels, (ii) the lateral extensions of the IR, and (iii) the floor of the(More)
The Herring bodies in the posterior lobe of the bovine hypophysis are very large (2–600 μ) and can be classified into three types. The type I Herring body contains an accumulation of neurosecretory granules. These Herring bodies are very scarce and should not be confused with the numerous, but small, axonal swellings which also contain neurosecretory(More)
Two cell types can be distinguished in the pars intermedia of Klauberina: (1) Glandular cells, which form a single-layered columnar epithelium on the vascular septum which divides the pars nervosa from the pars intermedia. (2) Marginal cells which form a flattened epithelium over the glandular cells and line the hypophysial cleft. Occasional projections(More)
Several types of neurosecretory fibers were observed in the normal infundibulum of the frog. After transection of the median eminence, these neurosecretory fibers of the proximal stump reacted asynchronously, but followed approximately the same pattern: a “passive accumulation” of granules observed early after the transection was followed by an “active(More)
The effects of adenohypophysectomy were studied on the hypothalamichypophysial neurosecretory system and the adrenal glands of Bufo arenarum Hensel. An increase in vascularization of the pars intermedia was found and the neurosecretory material (NSM) in the glandular region of the median eminence disappeared. Its reappearance later was accompanied by(More)
Two types of granules can be distinguished in the toad choroid plexus under the light microscope: pigment granules, mainly localized in the cells that line the free ends of the choroidal villi, and Gomori-positive granules, present in most epithelial cells. The ultrastructural analysis of the choroid plexus reveals three types of granules: multivesicular(More)
Das atopische Ekzem ist eine typische multifaktorielle Erkrankung, bei der Umwelt- und Lebensstilfaktoren eine individuell vererbte Disposition in die Manifestation führen. Die Heritabilität des atopischen Ekzems, d. h. der Anteil erblicher Faktoren an der Gesamtvarianz in der Bevölkerung, wird auf 70–80 % geschätzt. Die Möglichkeiten zur Entschlüsselung(More)
The supraoptic (SON) and paraventricular (PVN) nuclei of the lizard Liolaemus cyanogaster c. were studied by use of histochemical, immunocyto-chemical and electron microscopic methods. The immunofluorescence staining for neurophysin was applied to methacrylate-embedded material before and after treatment of the sections with urea and trypsin.(More)
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