J Endod
February 2020
This case report presents the finding of an aberrant right subclavian artery during the routine dissection of 230 human adults specimens. The case which we describe appeared in an 82-year-old male donor, in whom the right retro-esophageal subclavian artery was observed as the last branch of the aortic arch. The rate of occurrence of this variation is stated to be less than 1%.
View Article and Find Full Text PDFWe have characterised the c-fos expression patterns in various centers of the visual pathway of adult rats monocularly stimulated either by continuous or flickering light at different frequencies. Results show different immunocytochemical patterns in all centers studied, the geniculate lateral complex (LGC), superior colliculus (SC) and primary visual cortex (Oc1), depending on the physical characteristics of the stimulus (blinking frequency and light wavelength). After stimulation of the left eye, the ipsilateral pathway presents a substantial density of immunoresponsive cells, which is greater than expected with respect to the number of fibers that project ipsilaterally from the retina to the LGC and the superficial layers of the SC.
View Article and Find Full Text PDFInt J Radiat Biol
September 1995
Four hundred domestic quail eggs (Coturnix coturnix japonica) were used to study the possible teratogenic effects of extremely low frequency magnetic fields (ELF-MFs) on early embryonic development. Ten females were selected from a flock on the basis of their high fertility rate and low number of spontaneous abnormalities and they were selectivity maintained in nesting-boxes in a room where feeding and environmental conditions were carefully controlled. All the eggs used in the experiments were filiated by their progemtor, and were handled in the same way from the time they were laid until the point at which they were placed in a specially designed incubator, which dramatically reduces the stray magnetic fields produced by the heating system.
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