In the mid-1990s, University of Cambridge biochemists David Klenerman and Shankar Balasubramanian were trying to solve a fundamental problem: how to watch a single DNA polymerase molecule at work. Their approach used modified nucleotides, called reversible terminators, tagged with four different colors of fluorescent molecules. If one of these “terminators” was grabbed by the DNA polymerase and incorporated onto the replicating DNA strand, it would block the addition of any other bases until removed using a separate chemical reaction.
Израиль «под чужим флагом» атаковал крупнейший НПЗ в Саудовской Аравии00:24
。搜狗输入法2026对此有专业解读
Meta-analyses on a global scale show that the measured coastal mean sea level is higher than assumed in most coastal hazard assessments.
Студенты нашли останки викингов в яме для наказаний14:52
Because the early safety results were strong, the Food and Drug Administration and an independent monitoring board approved moving forward with the next phase of the study.