Sentences with phrase «toxic at higher concentrations»

Heavy metals: Metallic elements, including those required for plant and animal nutrition, in trace concentration but which become toxic at higher concentrations.

Similar indolone compounds had been found to inhibit cell death but were toxic at higher concentrations.

Not exact matches

After more than six years of research, the research team led by María Soengas, head of CNIO's Melanoma Group, showed that RAB7 acts as an orchestra director, determining the fate of melanoma cells: at high concentrations of RAB7, cellular autodigestion is very active, and this allows tumor cells to obtain energy, prevent the accumulation of toxic components and thus divide and proliferate; when RAB7 is reduced, cells use endosomes to recycle metastatic proteins, favouring their dispersal throughout the body.

Any accidental release of fluorine could also be an issue: Fluorine is a toxic and corrosive gas and, at high concentrations, can retard plant growth and damage teeth and bones.

Chemotherapy usually requires the delivery of multiple toxic drugs at high concentrations, and we could deliver all of these drugs in one injection at much lower dosages.

despite its controversy in mainstream medicine that antioxidants counteract chemotherapy, at the high concentrations achieved intravenously, vitamin C acts as a prooxidant and is toxic to tumor cells.

It's highly toxic to algae and other aquatic organisms, and has been detected at high concentrations in earthworms.

At lower concentrations they can act as pheromone and endocrine disruptors, while at higher concentrations they can be acutely toxic to invertebrateAt lower concentrations they can act as pheromone and endocrine disruptors, while at higher concentrations they can be acutely toxic to invertebrateat higher concentrations they can be acutely toxic to invertebrates.

«Carbon monoxide is extremely hazardous to human health because it is toxic, odorless and tasteless; it also has the potential to cause an explosion at high concentrations (AVMA 2007, NIOSH 2004).

«Many of the products — typically those that were yellow, red, or black — contained high concentrations of hazardous elements that can be toxic to children over an extended period, even at low levels.

But pollution also covers hundreds of chemicals which are fine or even beneficial at low levels but which if released in large quantities or in problematic circumstances cause «harm» — like phosphorus (grows your veges but also leads to toxic cyanobacterial blooms which kill cattle), nitrogen (grows crops kills many native species of plants and promotes weed growth costing farmers), copper (used as an oxygen carrier by gastropods but in high concentrations kills the life in sediments which feed fish), hormones like oestrogen (essential for regulating bodies but in high concentrations confuse reproductive cycles especially with marine life) or maybe molasses from a sugar mill (good for rum but when dumped into east coast estuaries used to cause oxygen sag in estuaries leading to massive fish kills).

It is a colorless, odorless gas that is not toxic to humans and other animals even at concentrations much higher than we are currently experiencing.