نتایج جستجو برای: parasitic effect
تعداد نتایج: 1670821 فیلتر نتایج به سال:
The chief obstacles to the study of the parasitic or in vivo form (spherule) of Coccidioides immitis grown in synthetic media have been: (1) separating spherules from hyphae, (2) obtaining rupture of the majority of the spherules, and (3) failure of the endospores to separate from the spherule matrix. Growth of spherules in a chemically defined liquid medium composed of glucose, ammo(liberated ...
background: organ transplant recipients can experience serious diseases from infections due to emerging and reemerging parasitic infections. this study was carried out to evaluate the prevalence of intestinal parasites among renal transplant re-cipients of iran. methods: this cross-sectional study was conducted from june 2003 to august 2004 on renal transplant recipients in iran. a total of 706...
sunflower (helinathus annuus) is a susceptible host to the holoparasite hemp broomrape (orobanche ramosa) in central parts of iran, causing yield loss due to severe infestations. a field study was conducted in 2006 to evaluate the efficacy of glyphosate for controlling the parasitic weed hemp broomrape in sunflower. glyphosate was applied once or twice at five rates ranging from 0.075 to 0.450 ...
in this study parasitic infection of bobwhite and japanese quails were clarified in farms of garmsar city in province of semnan. forty quails from two breeds randomly were selected and they examined to identify all internal and external parasites .finding was shown that five percent of the quails examined harbored one or more species of helminthes. two cestodes, raillietina echinobothrida and r...
Intestinal parasitic infections are found all over the world. With all the progresses made in the last decades which have resulted in reduction of infection and mortality, yet parasitic infections are one of the biggest public health problems in the developing countries. In this research children 2-5 years old of Saveh city were randomly chosen. Intestinal parasitic infections and the effect of...
The Internet is rife with malware: worms and viruses are rampant. However, a new form of malware, the Internet parasite, could have an even more devastating effect on host systems worldwide. Like their biological counterparts, Internet parasites evolve through mutation and create new attack vectors, propagating silently through their victims. In this study, we attempt to simulate parasitic beha...
Chronic disease caused by infections, cancer or autoimmunity can result in profound immune suppression. Immunoregulatory networks are established to prevent tissue damage caused by inflammation. Although these immune checkpoints preserve tissue function, they allow pathogens and tumors to persist, and even expand. Immune checkpoint blockade has recently been successfully employed to treat cance...
L6E9 rat myoblasts were infected in tissue culture with the myotropic Brazil strain of Trypanosoma cruzi. The effect of parasite infection on the ability of myoblasts to differentiate into myotubes was studied. Both morphological and biochemical differentiation were found to be profoundly affected by parasitic infection in a dose-related fashion. Evidence is presented to suggest that infected m...
Parasitic species are likely to have a significant effect on the stability of ecosystems. However, little is known of the nature of this effect, with debate over whether it is positive or negative. In previous work it was observed that a mixture of interaction types increases the local stability of a network. Following this, we investigate the consequences for species persistence of replacing h...
The reliability of information that animals use to make decisions has fitness consequences. Accordingly, selection should favor the evolution of strategies that enhance the reliability of information used in learning and decision making. For example, hosts of avian brood parasites should be selected to increase the reliability of the information they use to learn to recognize their own eggs and...
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