lipofectamine ltx is a cationic based transfection reagent that offers high levels of different transgenes expression in a huge number of cell types in vitro utilizing an easy and rapid protocol. the level of transgenes expression depend on some experimental variables containing cell density, lipofectamine and dna concentrations, lipofectamine -dna complexing time, and the presence or absence o...

Making an initial tetrahedral grid for complex geometry can be a tedious and time consuming task. This paper describes a novel procedure for generation of starting tetrahedral cells using hexahedral block topology. Hexahedral blocks are arranged around an aerodynamic body to form a flow domain. Each of the hexahedral blocks is then decomposed into six tetrahedral elements to obtain an initial t...

Human ferritin platforms containing Ru( ii )-polypyridyl-based photosensitizers effectively target cancer cells and provide cytotoxic effects upon light-activation.

apoptosis, or active cell death, is a specific mode of cell death, which is characterized by morphological changes such as chromatin condensation, fragmentation of the nucleus, cytoplasmic retraction and appearance of apoptotic bodies' containing apparently intact organelles. apoptosis occurs in physiological conditions as a regulatory mechanism of tissue growth, where cell proliferation is bal...

for evaluation of citric acid and citrate effects on bovine epididymal protoplasmic droplets, fifty bovine testes were collected in the october 2007 till june 2008 from urmia slaughterhouse and transported to the laboratory in a cool container filled with 5 °c ice pack. caudal epididymis was incised and sperm cells were put into petri dishes containing hams f10 media with 10% fetal calf serum (...

substitution at codon ser315 of katg gene, a reliable marker for isoniazid (inh) resistance and proliferate in spite of the loss of cell wall is called an l- form. unstable l- forms can convert to normal cells but stble l-forms can not.cell wall - deffective state may be induced spontaneously or through the action of an appropriate agent such as antibiotic interfering with the synthesis of cell...