there are increasing data on novel tumor markers such as gelatinase a, which play a key role in tissue invasion and metastasis. since prostate cancer is one of the common malignancies, we designed a simple and applicable indi¬rect hemagglutination (iha) test for determination of total gelatinase a in se¬rum samples. in this study, we have analyzed the circulating form of gelatinase a (mmp-2) in...

b ackground : tuberculosis is a crucial health problem. establishing a rapid, reliable and still inexpensive diagnostic method for tuberculosis seems to be substantial in developing countries where tb has very high incidence rate . methods:   an indirect  enzyme-linked  immunosorbent  assay (elisa )   was established to detect serum antibodies against mycobacterium  tuberculosis. three kinds of...

visceral leishmaniasis (vl) or kala-azar is considered as a parasitic disease caused by the species of leishmania donovani complex which is intracellular parasites. this systemic disease is endemic in some parts of provinc-es of iran. the aim of this study was to determine the seroprevalence of vl in qom province, central iran using di-rect agglutination test (dat).overall, 1564 serum samples (...

background: apart from genetic and environmental factors, activation of autoreactive mechanisms has been proposed to play a role in the pathogenesis of schizophrenia. in re-cent years, considerable work has been carried out to understand the role and contribution of the immune system in this disease. objective: to investigate the t cell response to phytohaemagglutinin (pha) and determine the se...

Introduction: An ongoing diagnostic challenge exists in quickly and reliably determining the area at risk (AR) for myocardial infarction (MI): i.e. the volume of potentially salvageable myocardium subtended by a coronary stenosis. T2w cardiac magnetic resonance (CMR) identifies the AR in large mammals by imaging post-ischemic edema. Previous T2w CMR studies have been performed in dogs, pigs and...

The pe rmea t ion o f monova len t cations th rough the cGMP-gated channel of catfish cone ou te r segments was examined by measur ing permeabi l i ty and conduc tance ratios u n d e r bi ionic condit ions. For monova len t cations presented on the cytoplasmic side of the channel , the permeabi l i ty ratios with respect to extracel lular Na followed the sequence NH4 > K > Li > Rb = Na > Cs whi...

PURPOSE One of the benefits of photon counting (PC) detectors over energy integrating (EI) detectors is the absence of many additive noise sources, such as electronic noise and secondary quantum noise. The purpose of this work is to demonstrate that thresholding voltage gains to detect individual x rays actually generates an unexpected source of white noise in photon counters. METHODS To dist...

Introduction Cross-sectional imaging of the colon has been recently introduced as MR or CT colonography. All methods rely on the aboral or oral administration of a contrast agent, which does change the physiological function of the colon. While performing several clinical studies using a partially hepatobiliary excreted contrast agent, we noted substantial intraluminal colonic contrast 24 hrs p...

One way to protect a digital product is to embed an au thor s signature into the object in the form of minute errors However this technique cannot be directly applied to protect intellectual proper ties such as solutions to hard problems which must maintain the cor rect functionality This paper proposes a constraint based watermarking technique and lays out a theoretical framework to evaluate t...