interactive effect of plant growth regulators6-benzylaminopurine (bap) (0, 2, 4 and 8 µm) and1-naphtalene acetic acid (naa) (0, 0.05, 0.25 and 0.5µm) in van der salm (vs) medium was used to optimize in vitro propagation of rosa hybrida cv. iceberg.shoot proliferation and number of new leaves weremeasured as growth indicators. as the concentrationof bap was raised, growth rate increased with all...

Exposure to cigarette smoke (CS) is linked to the development of respiratory diseases, and there is a need to understand the mechanisms whereby CS causes damage. Although animal models have provided valuable insights into smoking-related respiratory tract damage, modern toxicity testing calls for reliable in vitro models as alternatives for animal experimentation. We report on a repeated whole ...

A fellow of Cambridge University explores the implications of the British Department of Health's 1987 white paper on "Human Fertilisation and Embryology: A Framework for Legislation." The paper proposes the creation of a statutory authority to license experiments on human embryos in vitro during the first 14 days after fertilization, after which any surviving embryos would have to be destroyed...

the effects of pre-treating different types of roughages with alkali on the efficacy of exogenous fibrolytic enzymes for improving their digestibility were studied in vitroin factorial arrangement 4 × 3 × 5 (enzyme, treatment and roughage types). two fibrolytic feed enzymes novozyme (n) and celloclast (c) their combination (n+c) were evaluated for their potential to improve in vitrodegradation ...

introduction & aim: the ethanol and aqueous extracts of alhagi camelorum fisch. (fabaceae) whole plant, scrophularia desertii del. (scrophulariaceae) whole plant and ethanol extracts of echinophora platyloba dc. (apiaceae) whole plant, teucrium polium l. (lamiaceae) whole plant and berberis integerrima bunge root brake were investigated for anti-brucella in-vitro and in-vivo conditions. exp...

the aim of this study was to assess the effect of several doses of spearmint essential oil (seo; 0, 250, 500, 750 or 1,000 µg ml-1 buffered rumen fluid) on the fermentation kinetic and digestibility using in vitro gas production technique. a total mixed ration (30% roughage: 70% concentrate) was incubated with buffered rumen fluid. in vitro gas production, asymptotic gas production (a), rate of...