CD 72是一个重要的B细胞特异性受体，它以多种选择性剪切形式存在。
CD72 is a B cell specific receptor that exists in multiple alternative splicing forms.
20年前，科学家们都认为一个基因对应一个蛋白，当发现选择性剪切后就知道了一个基因可以生成多种不同的蛋白。
Until 20 years ago, scientists believed that a single gene made a single protein. With the discovery of alternative splicing, it became clear that one gene can produce multiple proteins.
提出了用剪切破碎机和锤式破碎机实现电路板的粗碎和选择性破碎。
A sheared double-toothed roll and a hammer crusher were used to achieve the liberation of metals from PCBs.
提出了用剪切破碎机和锤式破碎机实现电路板的粗碎和选择性破碎。
A sheared double-toothed roll and a hammer crusher were used to achieve the liberation of metals from PCBs.
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