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Brucella abortus uses a stealthy strategy to avoid activation of the innate immune system during the onset of infection
(PLOS ONE, 2007-07-18)
Background. To unravel the strategy by which Brucella abortus establishes chronic infections, we explored its early interaction with innate immunity. Methodology/Principal Findings. Brucella did not induce proinflammatory ...
BvrR/BvrS-controlled outer membrane proteins Omp3a and Omp3b are not essential for Brucella abortus virulence
(American Society for Microbiology, 2007-07-30)
The Brucella abortus two-component regulatory system BvrR/BvrS controls the expression of outer membrane proteins (Omp) Omp3a (Omp25) and Omp3b (Omp22). Disruption of bvrS or bvrR generates avirulent mutants with altered ...
Prevalence of Toxocara spp., Toxascaris leonina and ancylostomidae in public parks and beaches in different climate zones of Costa Rica
(Elsevier B.V, 2007-06-19)
This epidemiological study was conducted in different regions of Costa Rica to determine the prevalence of the developmental
stages of potential zoonotic intestinal helminths of dogs and cats in public places. Samples ...
Dynamics of infections with gastrointestinal parasites and Dictyocaulus viviparus in dairy and beef cattle from Costa Rica
(Elsevier B.V, 2007-09-30)
A longitudinal survey was carried out to determine and describe the prevalence and intensity of gastrointestinal parasite
infections and Dictyocaulus viviparus in a dairy and a beef cattle farm of two different ecological ...
Environmental detection of Batrachochytrium dendrobatidis in a temperate climate
(DISEASES OF AQUATIC ORGANISMS, 2007-09-14)
The aetiological agent of amphibian chytridiomycosis Batrachochytrium dendrobatidis
is a primary cause of amphibian population declines. Current surveillance is based on the detection
of B. dendrobatidis in its host but ...
Extensive Cell Envelope Modulation Is Associated with Virulence in Brucella abortus
(American Chemical Society, 2007-08-03)
Brucella virulence is linked to components of the cell envelope and tightly connected to the function of
the BvrR/BvrS sensory-regulatory system. To quantify the impact of BvrR/BvrS on cell envelope proteins,
we performed ...
Nasal rhinosporidiosis in a mule
(Canadian Veterinary Medical Association, 2007-03)
A mass was removed from the nostril of a mule that exhibited unilateral epistaxis and nasal discharge.
Impression smears revealed oval structures consistent with spores of Rhinosporidium seeberi. Microscopically, the
mass ...
Isolation and genetic characterization of Toxoplasma gondii from striped dolphin (Stenella coeruleoalba) from Costa Rica
(American Society of Parasitologists, 2007)
Toxoplasma gondii infection in marine mammals is of interest because of mortality and mode of transmission. It has been suggested that marine mammals become infected with T. gondii oocysts washed from land to the sea. We ...
Haematology and plasma chemistry of breeding olive ridley sea turtles (Lepidochelys olivacea)
(British Veterinary Association (BVA), 2007-12-15)
THE olive ridley turtle (Lepidochelys olivacea) is the smallest species of living sea turtle. It is primarily carnivorous
and highly migratory, with a pantropical distribution in the
Atlantic, Pacific and Indian oceans ...
Epidemiological, social, and control determinants of Chagas disease in Central America and Mexico - Group discussion
(Memórias do Instituto Oswaldo Cruz, 2007)
The existence of Chagas disease in Central America
was reported for the first time in El Salvador in 1913,
four years after its discovery in Brazil. At that time only
Triatoma dimidiata was known as a vector, but two ...