نتایج جستجو برای: minimum number of units mnu
تعداد نتایج: 21190967 فیلتر نتایج به سال:
The carcinogenicity of N-methyl-N-nitrosourea (MNU) has been demonstrated in several species for a variety of tissues, particularly the nervous system. Boxer dogs, a breed with a high incidence of spontaneous tumors (in cluding brain tumors), were exposed to MNU to determine their susceptibility to MNU and to compare the induced tumors with the types of tumors reported in the literature. Twenty...
The carcinogenicity of N-methyl-N-nitrosourea (MNU) has been demonstrated in several species for a variety of tissues, particularly the nervous system. Boxer dogs, a breed with a high incidence of spontaneous tumors (in cluding brain tumors), were exposed to MNU to determine their susceptibility to MNU and to compare the induced tumors with the types of tumors reported in the literature. Twenty...
AIM To investigate the effects of naringenin eye drops on N-methyl-N-nitrosourea (MNU)-induced photoreceptor cell death in rats. METHODS Photoreceptor cell death was induced by single intraperitoneal injection of MNU (60 mg/kg) in rats. Both eyes of all animals were instilled with one drop of vehicle, 0.5% or 1.0% naringenin eye drops three times per day from 7d before to 17d after MNU inject...
Retinal degeneration (RD) is a heterogeneous group of inherited dystrophies leading to blindness. The N-methyl-N-nitrosourea (MNU)-administered mouse is used as a pharmacologically induced RD animal model in various therapeutic investigations. The present study found the retinal neuroglobin (NGB) expression in the MNU-administered mice was significantly lower than in normal controls, suggesting...
esl/efl books play a crucial role in shaping language learners worldview of gender roles in society. the present study investigated the status of sexism in two sets of efl textbooks, one developed by non-native iranian authors (ili series) and the other by native authors (top notch series). first, two books from each series was selected randomly. then, a quantitative analysis was carried out wi...
No previous report has demonstrated the relationship between Helicobacter pylori (HP) infection and gastric carcinogenesis in an experimental animal model. A total of 170 male Mongolian gerbils (MGs) were divided into nine groups (18 < or = n < or = 20 for each group). MGs of four groups were inoculated with HP before or after continuous N-methyl-N-nitrosourea (MNU) administration via the drink...
investigating the feasibility of a proposed model for geometric design of deployable arch structures
deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
textbooks play a crucial role in language learning classrooms. the problem is that among the great quantity of available textbooks on the market which one is appropriate for a specific classroom and a group of learners. in order to evaluate elt textbooks, theorists and writers have offered different kinds of evaluative frameworks based on a number of principles and criteria. this study evaluate...
abstract: literature is said beautiful words of poetry or prose that excites reader’s or listener’s feel. certainly, to be effective, such a text should have certain characteristics. the four elements of the literature: thought, imagination, emotion and style make a text to be literary and effective. emotion and imagination are specific elements of literary texts, while thought and style a...
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