Cosmetics analysis represents a rapidly expanding field of analytical chemistry as new cosmetic formulations are increasingly in demand on the market and ingredients required for their production constantly evolving. Each country applies strict legislation regarding substances final product that must be prohibited or regulated. To verify compliance cosmetics with current regulations, official m...

objective(s): according to the occupationally risk of infection in staff workers who have direct contact with mycobacterium species, we investigated their immunological parameters and compared with healthy purified protein derivative (ppd) negative volunteers.   materials and methods : we investigated 20 ppd positive volunteers working at tuberculin unit of razi vaccine and serum research insti...

introduction: cupping therapy (hejamat) is one of the therapeutic methods used in traditional medicine that it is still common in many of the contemporary societies. in spite of the progress of science, we have less information on the traditional and alternative medicine including cupping.   with the study of mechanism of action of cupping, it will be more convincing for the traditional medicin...

In this study, nine organic sediment samples from a medieval archaeological site at Pineuilh, France, were examined for Giardia intestinalis using two commercially available immunological kits [enzyme-linked immuno sorbent and immunofluorescence (IFA) assays]. Both techniques detected G. intestinalis in one sample, dated to 1,000 Anno Domini. This is the first time IFA was successfully used to ...

Introduction: Surgery evokes complex metabolic, neuroendocrine and immunological responses. These are reparatory but when exaggerated may cause immunosuppression with morbidity and mortality. It is well-known that these responses are attenuated in laparoscopic cholecystectomy, which is the gold standard for treatment of cholelithiasis. Current novel minimal access techniques of natural orifice ...

background : brucellosis is a major bacterial zoonosis of global importance with the causative organisms of gram-negative facultative intracellular pathogens. the aims of this study were to standardize two immunoelectrophoretic techniques, rocket and cross immunoelectrophoresis, and compare their results with other conventional serodiagnostic tests. methods : sera from 15 sheep, without any his...

Helper T cells discriminate among different antigen-presenting cells to provide their help in a selective fashion. The molecular mechanisms leading to this exquisite selectivity are still elusive. Here, we demonstrate that immunological synapses are dynamic and adaptable structures allowing T cells to communicate with multiple cells. We show that T cells can form simultaneous immunological syna...

To analyze the in vivo structure of antigen-specific immunological synapses during an effective immune response, we established brain tumors expressing the surrogate tumor antigen ovalbumin and labeled antigen-specific anti-glioma T cells using specific tetramers. Using these techniques, we determined that a significant number of antigen-specific T cells were localized to the brain tumor and su...