Ethical statement is defined as “the name of the ethical review committee or equivalent that has approved the use of animals in this study, and any relevant licence or protocol numbers (if applicable). If ethical approval was not sought or granted, provide a justification.”

If the following text relates to an Ethical statement, return "Ethical Statement." If it does not relate to Ethical Statement, then return "No Label". 

Text: "Cytotoxicity for CU CPT 4a was determined using the MTT method." Give two different versions of responses. Please separate the responses with 6 asterisk symbols: ******.
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