background: mixed infection with amphistomes seems common in native cattle of iran. the aim of this study was to determine diagnostic antigens in cattle mixed amphistomiasis. methods: specific antigens of cotylophoron cotylophorum , gastrothylax crumenifer and paramphisto­mum cervi (mixed infection), the most common species, were collected from cattle was deter­mined. adult trematodes were coll...

background and aims: hiv is spreading rapidly among people word wide. infection with this virus leads to immune suppression and finally acquired immune deficiency syndrome (aids).early hiv detection is depended on antibody screening against virus by enzyme linked immunosorbent assay (elisa).some confirmatory tests such as western blot and recombinant immunobloting assay (riba), are used to veri...

serological methods are commonly used methods for detection of viruses. preparation of pure viral antigens is a crucial step in production of antibodies required for serological studies. in this research the gene encoding coat protein of a beet western yellows virus (bwyv) isolate from iran was amplified by pcr and was ligated into a bacterial expression vector (pet26b) to obtain pet-bwyv-cp cl...

it is well accepted that in experimental model of leishmania major infection, balb/c mice mount a th2 response and produce igg1 predominantly whereas c57bl/6mice enhance th1 response with the biased production of igg2a antibodies. therefore, screening for parasite antigens on the basis of reactivity with sera from infected susceptible or resistant mice might be used for the identification of th...

it is obvious that literature means prose and poetry and makes no difference either by arabs or non – arabs. but symbolism in the arabic concept has emerged since the emergence of the dark era’s literature and is loaned from the specific characteristics of dark era’s lives and is based on two elements: brevity and indirect speech. since the symbolism has emerged like a literary school generally...

the intracellular parasite neospora caninumis prevalent in several countries and is increasingly recognized as an important cause of abortion and stillbirth in cattle. for characterizeing the tachyzoite antigens of neospora caninumin aborted cows, sera were obtained from 116 cows which were aborted in the third semester of the pregnancy period and had antibodies to neospora caninumin elisa. to ...

partially fed (4 -5 days) h .a. anatolicum (iranian isolate) female adult ticks were used for preparation of antigens of midgut which are, the gut supernate antigen (gs), gut membrane antigen (gm), triton extracted gut membrane antigen ( tx-gm ) and sodium dodecyl sulphate treated triton extracted gut membrane antigen (sds-tx-gm). the new zealand white rabbits were immunized with gs, gm, tx- gm...

in leishmania (l.) major-infected balb/c mice th2-type cells results in disease progression, whereas c57bl/6-infected mice mount a th1-type response, which leads to control of the infection. th2 response correlates with igg1 whereas, th1 response supports switching to igg2a subclasses. since igg isotype-dominated response depends on different cd4 + t cell subsets, we studied the antigenic profi...