Increased Fluorohydroxyapatite across Dentin after Fluoride Iontophoresis.

Due to the multiple factors contributing to dentin demineralization and hypersensitivity among individuals, the effectiveness of the available treatments in the long term remains unclear. A recent study reported a simple strategy to potentially mimic natural remineralization with increased crystallization on the enamel caries using fluoride iontophoresis. Such an effect is also ideal for accomplishing dentin biomineralization and structural strength.

Double nylon loop for manual small-incision cataract surgery.

Manual small-incision cataract surgery using a double nylon loop technique is described. After capsulorhexis, hydrodissection, and hydrodelamination, the hard core of the nucleus is moved into the anterior chamber and divided into 3 pieces by a double nylon loop. Each piece is removed through a 4.

Mutational specificity of 2-nitro-3,4-dimethylimidazo[4,5-f]quinoline in the lacI gene of Escherichia coli.

2-Nitro-3,4-dimethylimidazo[4,5-f]quinoline (NO2-MeIQ) is the nitro derivative of 2-amino-3,4-dimethylimidazo[4,5-f]quinoline (MeIQ), one of the food pyrolysis product mutagens and carcinogens. The mutational specificity of NO2-MeIQ was determined using the lacI system in an Escherichia coli strain, EE125, harbouring the plasmid pKM101. NO2-MeIQ acts as a direct-acting mutagen towards this strain, and induces a broad range of mutational alterations.