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Senso-Neuroendocrine Cells Within The Cerebral Ganglion Of The Earthworm Aporrectodea Caliginosa
(
Qatar University
, 1992 , Article)
Ciliated neurones of probable endocrine function are present inside and outside the cerebral ganglion of the earthworm Aporrectodea caliginosa. Cell fibers contain clusters ofsynaptoid vesicles in regions adjacent to the ...
Combined effects of gamma radiation and Some physical factors on the rate of development of culex pipiens complex(L)
(
Qatar University
, 1993 , Article)
The present work deals with the role of some physical factors, applied separately or combined with gamma radiation on the Fj rate of development of Culex pipiens L. when treated in the pupal stage. The results showed no ...
The blood cells of a sea urchin from abou-kir coast Alexandria, Egypt.
(
Qatar University
, 1993 , Article)
The blood cells of a common sea urchin, collected from Abou-Kir region, were investigated using light and electron microscopy. Their distribution, properties, characteristics and histogenesis were determined. On the basis ...
Regeneration from different levels along the tail of the geckonid lizard, Bunopus tuberculatus
(
Qatar University
, 1994 , Article)
Study of the influence or amputation level on regenerate length, elongation rate and mitotic index of the tail of the geckonid lizard, Bunopus tuberculatus revealed that the tails amputated such that three-fourth, or ...
Scanning electron microscopy on adults of Schistosoma mansoni treated in-vivo with praziquantel and RO-15 (5458).
(
Qatar University
, 1997 , Article)
In view of the known relationship between changes in the tegumental surface of schistosomes and the potency of antischistosomal drugs,
the present work is done to study the effect of two oral drugs, namely Praziquantel ...
Tail Regeneration after Autotomy in the Geckonid Lizard Bunopus Tuberculatus
(
Qatar University
, 1993 , Article)
Tail regeneration in the geckonid lizard, Banopus tuberculatus was morphologically and histologically studied after induced atutomy. Seventy percent of the tail of each animal, by length, was removed by autotomy. Regeneration ...
Electron microscopic and autoradiographic analysis of the distribution of the vagus nerve in the ferret stomach
(
Qatar University
, 1999 , Article)
In this study, tritiated leucine was injected into the vagal dorsal motor nucleus after acute and chronic partial vagotomy. The method of sampling of the stomach, application of % 2 test and the analysis of the electron ...
Scanning electron microscopy of the egg-shell of the fly synthesiomyia Nudiseta (wulp)
(
Qatar University
, 1994 , Article)
The ultrastructure of the egg-shell of the fly Synthesiomyia nudiseta has been studied by scanning electron microscopy. The surface of the outer chorion is highly ridged, grooved and has a reticulate appearance except at ...
Ultrastructural Study Of Type "B" Neurosecretory Cells In The Earthworm Nervous System
(
Qatar University
, 1991 , Article)
Neurosecretory cell types Bi—B5 are widely distributed throughout the cerebral, subesophageal, nerve cord and peripheral ganglia of the oligochaete Aporrectodea caliginosa, Lumbricus terrestris, Eisenia foetida, Octolasion ...
Lead-Induced Malformations and Kidney Destruction of Developing Chick Embryos
(
Qatar University
, 1993 , Article)
Two doses of lead nitrate, 0.5 and 0.1 mg/egg, were injected into the eggs after 3 days of indubation. Lead nitrate increased mortality rate and decreased the body weight of developing embryos. The lead nitrate also decreased ...