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After incubation, the cells were washed three times with phosphate buffer saline (PBS, pH 5.8), followed by staining with Calcein Acetoxymethyl Ester (Calcein AM) and Propidium Iodide (PI) at 37 C for 30 min

The difference may be too small to be meaningful to patients

Concentrations of Cotinine and 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanol (NNAL) in U.S

After the collection stage, the system is automatically washed with absorbing and extracting liquids (e.g., methanol, an acetaldehyde-DNPH solution)

Pollution of the sea and oceans by cigarette butts would thus dangerously compromise the achievement of Sustainable Development Goal (SDG) 12

As our winning photo in this category shows, those ads are also often below 3ft (right at childrens eye level)