Yan hua Du

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Double-stranded M13 mp 18 DNA was irradiated with 30 ke V carbon ions in dry state under vacuum to investigate the low-energy heavy ion induced mutation spectra. When the irradiated DNA was used to transfect Escherichia coli JM 105, 3.6-5.7-fold increases in mutation frequency were observed, in contrast to the spontaneous group. Sequences of the 92 induced(More)
Organic nitrates, including nitroglycerin, produce vascular relaxation by releasing nitric oxide in vascular tissues near the plasma member of smooth muscle cells of veins and arteries. Calcitonin gene-related peptide (CGRP), a major transmitter in capsaicin-sensitive sensory nerves, is widely distributed in cardiovascular tissues and the release of CGRP is(More)
In 2013, the first dengue fever (DF) outbreak in central China was reported in the central of Henan province, northern temperate regions, although they have been sequentially recorded in Southern China. 106 suspected DF cases were reported and 73 patients were confirmed dengue virus type 3 (DEN-3) infections. 62/392 (15.8%) local health persons showed DEN(More)
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