87,693 research outputs found
Antropologia della disponibilità. Dal sistema della distruzione all’armonia della speranza
No full textEvidence of regional differences in the lectin histochemistry along the ductus epididymis of the lizard, Podarcis sicula Raf
No full textThe regional difference in the carbohydrate components of the ductus epididymis epithelium of a lizard was delineated
by means of 13 lectins. Basal cells expressed only N-acetylglucosamine (GlcNAc). Throughout the ductus, the secretory
cells showed oligosaccharides with terminal N-acetylneuraminic acid (Neu5Ac)α(2,6)galactose (Gal)/N-acetylgalactosamine
(GalNAc) and internal mannose (Man) and/or glucose (Glc) in the whole cytoplasm, oligosaccharides terminating in
Neu5Acα(2,6)Galβ(1,3)GalNAc, Neu5Acα(2,6)Galβ(1,4)GlcNAc, GalNAc, GlcNAc, and fucose (Fuc) in the supra-nuclear
zone, and also glycans terminating in Neu5Acα(2,3)Galβ(1,4)GlcNAc, Neu5Acα(2,6)Galβ(1,3)GalNAc, Galβ(1,4)GlcNAc
on the luminal surface. In the caput and corpus regions, the supra-nuclear cytoplasm was characterized by terminal
Galβ(1,4)GlcNAc and αGalNAc, the luminal surface by αGalNAc and Gal. The Golgi zone, showing oligosaccharides with
terminal Neu5Acα(2,3)Galβ(1,4)GlcNAc, Neu5Acα(2,6)Galβ(1,3)GalNAc, Neu5Acα(2,6)Galβ(1,4)GlcNAc, and internal
GlcNAc, expressed terminal Galβ(1,4)GlcNAc and αGalNAc in the caput, and terminal βGalNAc in the corpus. The granules
showed all the investigated carbohydrates in their peripheral zone except terminal βGalNAc and Fuc, whereas internal Man/Glc
and terminal Gal were expressed in the central core, and Fuc throughout the ductus, terminal GlcNAc in the caput and corpus,
and terminal αGalNAc only in the corpus
Localizzazione immunoistochimica delle cellule ad ACTH nell’ipofisi di pesce spada (Xiphias gladius L.)
No full textPltuitary ACTH cells were immimohistochemically localized in the teleost fish Xiphias gladius L. using
anti-hACTH polychnal serum. ACTH cells were found bordering the murohypophysis (NH) branches in the
adenohypophysis, scattered in the pars intermedia (PI) and in the PD. Along the NH branches the hACTHimmunoreactive
(ir) cells were elongated (medium size 21,27±4,02 um) and disposed in a palized, whereas in
the PI and in PD they were, small and round-shaped (0 7,5 ±1,32 um). The distribution and density of hACTHir
cells did not show difference related to sex and size of specimens
Della mancanza come poesia
No full textè possibile pensare alla poesia come una forma privilegiata della mancanza
Testicular activity and sperm glycoproteins in giant red shrimp Aristaeomorpha foliacea
No full textThe reproduction of male giani red shrimp Aristaeomorpha foliacea, collected from thè late
winterto thè summer in thè north-western lonian Sea (Mediterranean Sea), was investigated using
histological and histochemistry methods. Seasonal changes in thè spermiogenesis and thè glycoprotein
pattern were found and sperm glycoproteins matured as gametes moved from thè testis to
thè terminal ampliila. In serial sections stained with hematoxylin and eosin thè testicular activity
appeared to be discontinuous. In late winter thè testes had no meiotic activity and thè seminiferous
epithelium consisted of interkinetic spermatogonia and spermatozoa. In spring, spermiogenetic
activity was high and thè seminiferous epithelium mainly consisted of spermatocytes and spermatozoa
while in summer, thè testes were again inactive since both spermatocytes and spermatozoa
were lacking. The use of twelve different lectins indicated that thè intratesticular spermatozoa
from late winter to summer contain surface binding sites for SNA, MAA, Con A and KOH-sialidase
(si)-WGA. In March and July they also exhibited nuclear and cytoplasmic reactivity for SNA and
Con A. In thè hemispermatophore thè spermatozoa displayed a more complex lectin-binding pattern
because they also reacted with PNA, DBA, HPA, OSA II. The staining with DBA, KOH-si-
DBA, and OSA II showed differences between thè spermatozoa from late winter-spring
hemispermatophores and summer hemispermatophores: thè former showed a nuclear affinity
whereas thè latter displayed surface and/or cytoplasm staining. No reaction was observed with
SBA, GSAI-B4, UEA I, and LTA
Babylonian knowledge about temporal lobe epilepsy: distinguishing mesial from lateral forms
No full textLa performatività politica dello spazio sociale
No full textCos'è la performatività sociale? E in che modo una performatività sociale dello spazio può condizionare le forme della politica
Localizzazione immunoistochimica delle cellule a MSH nell’ipofisi di pesce spada (Xiphias gladius L.).
No full textPituitary MSH cels were immunohistochemically localized in the teleost fish Xiphias gladius L. using anti a-MSH polydonal
serum. MSH cells were found mainly in the pars intermedia (PI) and scarsety in the PD. The density of MSH cells showed difference related to sex and size ofspecimens
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