We report the preparation of a new class of copolymer films that consist of polymethylene (PM) with a low percentage ( approximately 1-4%) of randomly distributed ethyl ester side groups, consistent with poly(methylene-co-ethyl acetate). The films are prepared through a surface-catalyzed polymerization on gold surfaces upon exposure to a dilute solution of diazomethane (DM) and ethyl diazoaceta...

background: colorectal tumor is one of the main causes of death in our country. the aim of the present study was to determine the clinicopathological aspects of tumor and the presence of hepatic micrometastasis in patients with colorectal cancer (crc). materials and methods: forty two patients with crc were evaluated in the study surgical treatment was performed and liver biopsy was taken for t...

b ackground : one of the main mechanisms of resistance to carbapenems is potential of klebsiella pneumoniae to produce k . pneumoniae carbapenemase (kpc). kpc is an important type of carbapenemase, which can hydrolyze carbapenems and other beta-lactam antibiotics. modified hodge test (mht) and  use  of  boronic  acid  as  a  kpc  inhibitor  are  two  types  of  phenotypic methods, which are use...

conclusions: in neonates and infants with primary diagnosis of sepsis, hsv infection should be considered especially if the clinical condition does not improve after 48 hours of antibiotic therapy, and sepsis still exists with elevated liver enzymes. results: among 150 neonates and infants younger than 3 months old with sepsis, the pcr results for detecting the hsv dna, were positive in 6 sampl...

conclusions findings of this study showed that integron can have a limited frequency in s. aureus isolated from clinical sample in tehran. results among the 200 samples, 1% of the strains (two isolates) contained the class 1 integron gene. the results of this study showed that the highest frequency of the obtained samples belonged to males and the isolates occurred mostly in individuals aged 51...

introduction : haemophilus influenzae is a gram-negative bacterium causing a variety of respiratory infections in developing countries, especially in children. nasopharynx carriers of h. influenzae are the prominent source and transitional vectors of invasive diseases. as very limited information on h. influenzae carriage rate in iran was available, an evaluation on prevalence of this bacterium...

background and aims: this research aimed to study a possible link between endometriosis and polymorphism of the progesterone receptor gene. materials and methods: the control group consisted of 86 women without endometriosis and the case group comprised 86 patients with a diagnosis of endometriosis by laparoscopy. genotypes for alu insertion polymorphisms (a1/a1, a1/a2 and a2/a2) were described...

purpose : to report a patient with orbital tuberculosis (tb) without any history of systemic involvement case report : a 41-year-old afghani man who presented with progressive painless swelling in lateral side of the left upper eyelid and diplopia. he did not have history of fever or pulmonary disease. histopathology revealed a granulomatous inflammation with caseation necrosis. microbiological...

the last two decades have seen a massive growth in the application of dna technology in histocompatibility and immunogenetics. this review summarises the history and application of dna methods in this area.