نتایج جستجو برای: supernatant
تعداد نتایج: 10896 فیلتر نتایج به سال:
Determinations of scrapie activity in subcellular fractions from infected hamster brains through the asymptomatic and symptomatic course of infection revealed the presence of substantial amounts of scrapie infectivity in the 100,000 X g supernatant fractions, indicating that association with physically discernible membrane structures is not necessary for the transmission of the scrapie agent. A...
Background and purpose: So far many protein factors capable of inhibiting the immune system are secreted by different cancer cell lines in the culture supernatant and characterized. Ïn this report, the release of DNÂ fragments into the culture supernatant of human promyelocytic cell line, HL-60, with immunosuppressive activity was investigated. Materials and methods : HL-60 culture supern...
Background: Actinomycetes have significant biosynthetic potential of secondary metabolites and promising resource for drug industry. These secondary metabolitesare diverse in biological, chemical structures and functions and the most prolific source of antimicrobial compounds. Most of these antimicrobial have beenisolated from soil-derived actinomycetes of the genus Streptomyces. The aim of thi...
Background: B. thetaiotaomicron is introduced as a candidate for the next generation of probiotics. TLR2, 4 play an important and necessary role in activating and modulating the innate immune system after exposure to bacteria in the intestine. This study aimed to investigate the effect of B. thetaiotaomicron and its derivatives on the alteration of the tlr2 and tlr4 gene expression. Materials ...
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