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fierce street fighting in eastern ukraine. president zelensky says his forces are "holding on", but warns troops are running low on ammunition. and queen elizabeth ii becomes the world's second longest serving monarch — only louis xiv of france has ruled for longer. good afternoon. if you have just joined if you havejustjoined us, welcome to bbc news. a leading business group has told the bbc that households have been cutting back on spending because of the cost of living crisis, and will go into their own recession this year. tony danker, the director general of the confederation ...

So, this is a naturally—occurring lignum that we find in our body but when we develop drugs, sometimes we want to modify those lignums to have a different effect or a more strong effect. i think you kind of learn about proteins as two—dimensional structures but that is not the reality at all. in fact, proteins are three—dimensional and very complicated structures. and when you are designing a drug for such a complex structure, it needs to have three—dimensional shape. from september, the pharmaceutical students here will start having their 3d lessons. so in the first year, what we will...