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1

The neuronal structure of the posterior part of the hypothalamus in prenatal guinea pigs

100%
Robak A.
Acta Biologica Cracoviensia. Series Botanica. Supplement
|
2000
|
tom 42
|
nr 1
2

The neuronal structure of the preoptic area in the mole and the rabbit: Golgi and Nissl studies

75%
Bogus-Nowakowska K., Robak A., Szteyn S., Rowniak M., Najdzion J., Wasilewska B.
Folia Morphologica
|
2006
|
tom 65
|
nr 4
367-376
The present studies were carried out on the brains of the adult mole and rabbit. The preparations were made by means of the Golgi technique and the Nissl method. Two types of neurons were distinguished in the preoptic area (POA) of both species: bipolar and multipolar. The bipolar neurons have oval, fusiform or round perikarya and two dendritic trunks arising from the opposite poles of the cell body. The dendrites bifurcate once or twice. The dendritic branches have swellings, single spine-like and filiform processes. The multipolar neurons usually have triangular and quadrangular perikarya and from 3 to 5 dendritic trunks. The dendrites of the mole neurons branch sparsely, whereas the dendrites of the rabbit neurons display 2 or 3 divisions. On the dendritic branches varicosities and different protuberances were observed. The general morphology of the bipolar and multipolar neurons is similar in the mammals studied, although the neurons of the rabbit POA display a more complicated structure. Their dendritic branches show more divisions and possess more swellings and different processes than the dendrites of the neurons of the mole POA. Furthermore, of the multipolar neurons only the dendrites in POA of the rabbit were observed to have a rosary-like beaded appearance.
3

The neuronal structure of globus pallidus in Bison bonasus: Nissl and Golgi study

75%
Rowniak M., Szteyn S., Robak A.
Folia Morphologica
|
1995
|
tom 54
|
nr 3
4

The neuronal structure of the dorsal nucleus of the lateral geniculate body in the common shrew [Sorex araneus] and the bank vole [Clethrionomys glareolus] : Golgi and Nissl studies

63%
Najdzion J., Wasilewska B., Szteyn S., Robak A., Bogus-Nowakowska K., Rowniak M.
Folia Morphologica
|
2006
|
tom 65
|
nr 4
352-358
The topography and neuronal structure of the dorsal nucleus of the lateral geniculate body (GLd) of the common shrew and the bank vole are similar. The lateral geniculate body of both the species examined has a homogeneous structure and no observable cytoarchitectonic lamination. On the basis of the shape of the dendritic arbours as well as the pattern of dendritic arborisations the following two types of neurons were distinguished. Type I “bushy” neurons that have multipolar or round perikarya (common shrew perikarya 9–12 µm, bank vole perikarya 10–13 µm), with 4–6 short thick dendritic trunks that subdivide into many bush-like branches. The dendritic trunks are smooth, in contrast to the distal branches, which are covered with numerous spine-like protrusions of different lengths and forms. An axon emerges from the soma, sometimes very close to one of the primary dendrites. The type I neurons are typically projection cells that send their axons to the primary visual cortex. These neurons predominate in the GLd of both species. Type II neurons, which have an elongated soma with primary dendrites arising from opposite poles of the perikaryon (common shrew perikarya 8–10 µm, bank vole perikarya 9–11 µm). The dendritic arbours of these cells are less extensive and their dendrites have fewer spines than those of the type I neurons. Axons were seldom observed. The type II neurons are presumably interneurons and are definitely less numerous than the type I neurons.
5

The neuronal structure of the red nucleus in newborn guinea pigs

63%
Robak A., Szteyn S., Bogus-Nowakowska K., Rowniak M.
Folia Morphologica
|
2003
|
tom 62
|
nr 1
The preparations, stained according to the Nissl and Klüver-Barrera methods, were used to describe the topography and morphology of the red nucleus (RN) as well as the structure of the rubral perikarya in newborn (P0) guinea pigs. The Golgi impregnated preparations were used to distinguish types of neurons. RN is a uniform cell group and has the length from 740 to 860 µm. The Nissl stained perikarya were classified into three categories: big, medium-sized and small (A, B, C, respectively). The big perikarya, which contain a lot of tigroidal substance, were mainly observed at the caudal and ventral portions of RN. The small perikarya often have multiple nucleoli. The impregnated neurons were classified into 5 types: 1 — large, aspiny, rich-arborised multipolar cells, 2 — large and medium sized, spiny, rich-arborised fusiform or pear-shaped cells, 3 — medium-sized, spiny, rich-arborised rounded cells, 4 — medium-sized, spiny, richarborised bipolar cells, 5 — small and single medium-sized cells. The 5th type constitutes a heterogeneous population and also has neurons in different developmental stages. Intraspecies variations concerning both the length of RN and a number of the triangular perikarya of the red nucleus were observed in the examined guinea pigs.
6

The types of neurons of the somatic oculomotor nucleus in the European bison. Nissl and Golgi studies

63%
Szteyn S., Robak A., Rowniak M.
Folia Morphologica
|
1997
|
tom 56
|
nr 4
7

The nerve cells of the neostriatum in the common shrew [Sorex araneus] and bank vole [Clethrionomys glareolus]: a Golgi comparative study

51%
Wasilewska B., Najdzion J., Robak A., Szteyn S., Bogus-Nowakowska K., Rowniak M.
Folia Morphologica
|
2007
|
tom 66
|
nr 1
The studies were carried out on 12 brains derived from adult representatives of two mammalian orders, Insectivora and Rodentia. The neostriatum was compared in the common shrew (Sorex araneus) and bank vole (Clethrionomys glareolus). Three main types of striatal neuron were distinguished in the common shrew and five types of neurons in the bank vole. The fifth type of bank vole neurons was additionally divided into two subtypes with respect to dendritic pattern.
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