If the power source is a listed Class 2 transformer or listed Class 2 power supply — or it’s in listed equipment marked to identify the Class 2 power source — you’ve got a Class 2 circuit between the ...
Article 725 provides the requirements for Class 2 circuits in Part III. The definitions for Class 2 circuits can be found in Art. 100. In the November 2020 issue, we discussed the general requirements ...
CRISPR–Cas systems form two major classes that differ in the organization of their effector modules. The effector modules of class 2 systems consist of a single large protein, which makes them the ...
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