منابع مشابه
Does the avian ophthalmic nerve carry magnetic navigational information?
The bobolink (Dolichonyx oryzivorus) uses the earth's magnetic field as one source of directional information for its migratory orientation. However, the location and structure of the magnetoreceptors that transduce the magnetic information to the nervous system are unknown. Because treatment with a strong magnetic pulse results in a change in the direction of orientation, one of the receptors ...
متن کاملPollen peculiarities
In flowering plants, male meiosis occurs in the microsporocyte to produce four microspores, each of which develops into a pollen grain. The image at top left is a transmission electron micrograph of a wild-type microspore from Arabidopsis thaliana, showing the single, central nucleus. The tetraspore (tes) mutant of Arabidopsis fails to undergo cytokinesis at the end of male meiosis and all four...
متن کاملPeculiarities of Prion Diseases
Prion diseases (PrDs) are transmissible and fatal neurodegenerative diseases naturally occurring in humans and animals, ‘‘mad cow’’ disease being the most infamous. Their development and propagation requires endogenous prion protein (PrP) and derives from the conversion of PrP to a misfolded form, which combines with other misfolded PrP molecules to form small nuclei (seeds). The seeds can then...
متن کاملClinical peculiarities of tuberculosis
The ongoing spread of tuberculosis (TB) in poor resource countries and the recently increasing incidence in high resource countries lead to the need of updated knowledge for clinicians, particularly for pediatricians. The purpose of this article is to provide an overview on the most important peculiarities of TB in children. Children are less contagious than adults, but the risk of progression ...
متن کاملPulse Doppler Analysis in External Ophthalmic and the Long Ciliary Ophthalmic Arteries in the Cat
Objective- Analysis of the PSV (peak systolic velocity), EDV (end diastolic velocity) and RI (Resistant Index) in external ophthalmic and the long ciliary ophthalmic arteries in the cat by pulse Doppler. Design- Descriptive study Animals- 12 short haired “Tomcats” weighted about 3.9± 0.9 Kg no e general and optic disease in clinical, paraclinical and ophthalmoscopic examinations. Pr...
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ژورنال
عنوان ژورنال: Ciência Rural
سال: 2018
ISSN: 1678-4596,0103-8478
DOI: 10.1590/0103-8478cr20170904