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In page Center for Biologics Evaluation and Research:

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From these legal authorities, CBER publishes regulations which are included in the first chapter Title 21 of the Code of Federal Regulations. Most of the regulations specific to CBER are found from 21CFR600-680. 21CFR1271 contains the rules for HCT/Ps. For products which are also drugs, such as blood for transfusion, rules in 21CFR200 and following apply. Other general rules, such as the regulations for clinical trials involving human subjects in 21CFR50, may also apply.[citation needed]