Volume 20
نویسنده
چکیده
The source of equine-virulent strains of Venezuelan equine encephalitis (WE) virus that sporadically cause epidemics and equine epizootics is unknown. This is the most important unanswered scientific and public health question relating to VEE virus. One possibility is that epizootic virions exist at low levels in populations of enzootic strains. These virions could then break out into a visible epizootic cycle through the combination of chance selection and fortuitous passage through susceptible mammals, including equine animals and man, that produce high levels of viremia capable of infecting inefficient vectors. Arbovirus studies in northwestern Venezuela’s Lake Maracaibo
منابع مشابه
Three-dimensional structure of axonal mitochondria reflects the age of drosophila☆
This study aimed to reconstruct a three-dimensional map of axonal mitochondria using Fiji and Neurolucida software, and to observe directly the morphology and distribution of mitochondria in axons of motor neurons in dorsal longitudinal flight muscles of drosophila aged 5 days and 20 days, using electron microscopy. Results indicated that there was no difference in the total area and volume of ...
متن کاملEffects of peak inspiratory flow on development of ventilator-induced lung injury in rabbits.
BACKGROUND A lung-protecting strategy is essential when ventilating acute lung injury/acute respiratory distress syndrome patients. Current emphasis is on limiting inspiratory pressure and volume. This study was designed to investigate the effect of peak inspiratory flow on lung injury. METHODS Twenty-four rabbits were anesthetized, tracheostomized, ventilated with a Siemens Servo 300, and ra...
متن کاملMethacholine-induced volume dependence of respiratory resistance in preschool children.
Enhanced negative volume dependence of airway resistance is associated with bronchoconstriction in tracheostomized paralysed open-chest animals. Significant upper airways responses may be associated with bronchoconstriction and could thereby alter the pattern of volume dependence in spontaneously breathing subjects. The aim of the study was to test whether volume dependence of respiratory resis...
متن کاملThe Relationship between Trading Volume , Returns and Volatility :
The relationship between returns, volatility and trading volume has interested financial economists and analysts for a number of years. A widely documented result is the positive contemporaneous relationship between price returns and trading volume. This paper investigates the contemporaneous and dynamic relationships between trading volume, returns and volatility for Greek index futures (FTSE/...
متن کاملValue of serial magnetic resonance imaging in the assessment of brain metastases volume control during stereotactic radiosurgery
AIM To evaluate brain metastases volume control capabilities of stereotactic radiosurgery (SRS) through serial magnetic resonance (MR) imaging follow-up. METHODS MR examinations of 54 brain metastases in 31 patients before and after SRS were reviewed. Patients were included in this study if they had a pre-treatment MR examination and serial follow-up MR examinations at 6 wk, 9 wk, 12 wk, and ...
متن کاملCardiac afferents play the dominant role in renal nerve inhibition elicited by volume expansion in the rabbit.
In the rabbit, vagotomy combined with arterial baroreceptor denervation abolishes the renal sympathoinhibition elicited by volume expansion. However, the effect of removing cardiopulmonary afferents alone has not been investigated. The aim of the present study was to determine the role of the cardiac afferents in the renal sympathetic response elicited by volume expansion in the normal consciou...
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تاریخ انتشار 2003