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The physiological control to support the absence of O 2 for long periods of diving, and oxidative damage impact caused by the whole process of hypoxia/reperfusion in freshwater turtles is well known. However, effects of contaminants may act as co-varying stressors and cause biological damage, disrupting the hypoxia/reperfusion oxidative damage control. In order to investigate the action of...
Mg 2+ -dependent ATPases were investigated in Malpighian tubules of the blood-sucking insect, Triatoma infestans, with cytochemical procedures for light and electron microscopy. The aim was to establish patterns of enzyme occurrence in the blood-sucking insect under control rearing conditions for further comparisons with animals subjected to the action of stress factors. Enzyme activity was...
The aim of this study was to evaluate the formed elements in the periferical blood of two amostral groups of Phrynops geoffroanus: one from an urban environment under domestic sewage dumping, and another from a non-contaminated environment. Blood samples of 36 animals (females and males) were collected through cardiocentesis. Sixteen specimens were from the urban environment, and 20 were from a control...
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