Skip to main content
Find a Lawyer

Code of Federal Regulations Title 9. Animals and Animal Products § 9.101.6 Cell cultures

Current as of January 02, 2025 | Updated by Findlaw Staff

When used in conjunction with or in reference to cell cultures, which may be referred to as tissue cultures, the following terms shall mean:

(a) Batches of primary cells. A pool of original cells derived from normal tissue up to and including the 10th subculture.

(b) Cell line. A pool of cells which are 11 or more subcultures from the tissue of origin.

(c) Subculture. Each flask to flask transfer or passage regardless of the number of cell replications.

(d) Master Cell Stock (MCS). The supply of cells of a specific passage level from which cells for production of biologics originate.

Previous Part of Code Next Part of Code
Back to Chapter List

Cite this article: FindLaw.com - Code of Federal Regulations Title 9. Animals and Animal Products § 9.101.6 Cell cultures - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-9-animals-and-animal-products/cfr-sect-9-101-6/

FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature before relying on it for your legal needs.

Was this helpful?

Welcome to FindLaw's Cases & Codes

A free source of state and federal court opinions, state laws, and the United States Code. For more information about the legal concepts addressed by these cases and statutes, visit FindLaw’s Learn About the Law.

Go to Learn About the Law

Latest Blog Posts

For Legal Professionals

Learn About The Law

Get help with your legal needs

FindLaw’s Learn About the Law features thousands of informational articles to help you understand your options. And if you’re ready to hire an attorney, find one in your area who can help.

Go to Learn About the Law

Need to Find an Attorney?

Search our directory by legal issue

Enter information in one or both fields (Required)

Copied to clipboard