introduction: to cope with novel changes, organizations must think beyond environmental compatibility and seek to take advantage of potential opportunities. a paradigm for this is the enhancement of organizational flexibility, speed, quality, and agility. human resources are the most important tool for enhancement of organizational agility and the most valuable asset of each organization and co...

abo blood type antigens are polymorphic, inherited structures presented on the surface of red blood cells. although abo blood group antigens is the most important antigens in transfusion medicine, its main role is not clearly clarified. correlation between abo blood group and susceptibility to certain infectious and non-infectious diseases is a controversial issue. since, lack of blood type ant...

background: parasitological methods for the diagnosis of visceral leishmania-sis (vl) require invasive procedures, so serological and molecular approaches have been developed but are not generally applicable in the field. we evaluated a loop mediated isothermal amplification (lamp) assay using blood from vl pa-tients and compared it to nested pcr. methods: forty-seven subjects with clinical fea...

the evolution of human blood groups, without doubt, has a history as old as man himself. there are at least three hypotheses about the emergence and mutation of human blood groups. global distribution pattern of blood groups depends on various environmental factors, such as disease, climate, altitude, humidity etc. in this survey, the collection of main blood groups abo and rh, along with some ...

objectives the cause of rheumatoid arthritis (ra) as a chronic inflammatory autoimmune disease is still unknown. it appears that both genetic and environmental factors play a role in its pathogenesis. recent studies reveal that in addition to the cns, immune cells synthesis neurotransmitters so that these catecholamines can regulate immune functions. the aim of this study is to evaluate the dop...

ackground: knowing the human platelet antigens (hpa) and genes frequency in different populations is important not only for population studies but also for clinical transfusion practice. hpa genes frequency in iran is not evaluated, so we investigated the hpa-2, hpa-3, and hpa-5 frequency and their polymorphism. materials and methods: dna from 120 iranians (99 iranian blood donors and 21 patien...

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a new simple and rapid dispersive liquid-liquid microextraction has been applied to preconcentrate tracelevels of zinc as a prior step to its determination by spectrophotometric method. in the proposed method, 4-(2-pyridylazo) resorcinol (par) is used as a chelating agent, and chloroform and ethanol are selected asextraction and dispersive solvent. the optimization strategy is carried out by us...