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Important Holiday Shipping Schedule Update


ATCC will be closed Wednesday, December 24, 2025 to Thursday, January 1, 2026. Please be advised  you can still submit orders for products during this time, but shipping will resume on Friday, January 2, 2026.


To ensure shipping before the ATCC holiday closing period, please reference the shipping schedule below:


  • Last shipping day for Domestic orders is Friday, December 19, 2025 (Room temperature items shipping only as no frozen item shipments on Fridays. Frozen/ dry ice shipments resumes January 2, 2026).

  • Last shipping day for International orders is Friday, December 12, 2025.

  • Shipping resumes January 2, 2026 for orders submitted after December 19, 2025.

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Feeder Cells

Blue green and red 3D fibroblasts.

Get high-quality feeder cells to grow your cells in culture

When culturing cells you need the right reagents and materials for the process. ATCC provides high-quality, metabolically active feeder cells that will ensure your cells proliferate and your results will be reproducible. In addition, ATCC fibroblasts and irradiated cells ensure that your stem cells remain in a pluripotent, undifferentiated state.

Explore our resources

Flat, fluorescent yellow mycoplasma spheres.

Cell Line Contamination

Mycoplasma contamination significantly affects cell line physiology, resulting in erroneous data and misinterpretation of results. Explore the best practices for routine testing for mycoplasma contamination.

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Purple and green induced pluripotent stem cells.

Stem Cell Culture Guide

Get tips and techniques from our cell culture experts.

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Feeder Cells

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