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New methods such as mini 3D ‘organoids’ are slowly phasing out animal testing in some areas of research. Plus, how to spot a fraudulent paper and the surprising science of squeaky sneakers.
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Only six years ago, the boss of Ocado Group was writing the obituary for supermarkets as he predicted that a surge in online grocery shopping during the pandemic had brought forward the hi-tech future.
两者最明显的区别在外形上。蜡梅叶片对生生长，梅花叶片则是互生。蜡梅花瓣质地厚实、蜡质光泽明显，花色以黄为主；梅花花瓣薄而柔润，花色丰富，有粉、白、红等。蜡梅幼枝四方形、老枝近圆柱形，整体枝条挺拔；梅花小枝为绿色、常弯曲，树干树皮浅灰色或带绿色，平滑。