hyla

Gadolinium-diethylenetriaminepentaacetate-bismethylamide ( Gd-DTPA-BMA ) was delivered intravenously as contrast agent to trace the blood labyrinth barrier change.

静脉注射T1增强剂Gadolinium-diethylenetriaminepentaacetate-bismethylamide ( Gd-DTPA-BMA ) 作为血迷路屏障的示踪剂.

A NEW SUBSPECIES OF HYLA SIMPLEX BOETTGER FROM CHINA ( AMPHIBIA: HYLIDAE )

华南雨蛙Hylasimplex-新亚种 ( 两栖纲: 雨蛙科 )

DNA methylation is the only known covalent modification of DNA molecule. It is accomplished by transfer of the methyl group from S-adenosyl methionine to 5 position of the purine ring of cytosine.

DNA甲基化（DNA Methylation）是目前已知的唯一天然的DNA共价修饰方式，由DNA转移酶催化，将S-腺苷甲硫氨酸上的甲基转移到胞嘧啶嘌呤环的第五位碳原子上。