Understanding Cell Culture Definitions

As cell culture workflows become more defined and application-specific, understanding the terminology used to describe matrix, medias and supplements is increasingly important.

Why Do These Definitions Matter?

Choosing the right formulation can help researchers establish a more controlled and reproducible culture environment. For applications such as stem cell culture, differentiation, 3D culture, organoid development, and translational research, understanding exactly what is—and isn’t—in your cell culture components can be critical.

Defining Your Culture Conditions with TheWell Bioscience

At TheWell Bioscience, we offer culture solutions designed to help researchers build more defined, consistent, and reproducible workflows.

From 3D culture matrices, media, supplements, and recovery solution, choosing components with clearly defined origins can help you better control your cell culture system.

Chemically Defined

  • The finished product contains only raw materials with known chemical identities and defined concentrations, such as small molecules, salts, carbohydrates, amino acids, fatty acids, and steroids.
  • It does not contain complex materials with undefined compositions. Additionally, neither the finished product nor its manufacturing process uses raw materials derived directly from animal or human tissues or body fluids.
View our chemically defined products:
Vial with blue cap labeled VitroGel Hydrogel Matrix for research use only, TheWell Bioscience logo visible down the label.

Ready-to-use Hydrogels

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Two lab bottles: a large VitroGel Dilution Solution bottle with a white cap and a smaller VitroGel RGD High Concentration vial beside it

Tunable
Hydrogels

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Starter
Kits

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Cell Invasion
Kits

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Cell Harvesting Solutions

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Live-Dead
Assay Kit

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Sterile burgundy vial with screw cap and a white label reading 'RocketCell Cell Viability'—shows REF, LOT, date, and 500 µL quantity used in cell viability assays.

Cell Viability
Enhancer

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Bioinks

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Animal Origin-Free (AOF)

  • The finished product and its manufacturing process do not use primary or secondary raw materials directly sourced from animal or human tissues or body fluids. However, tertiary raw materials may originate from animal or human tissues, body fluids, or cell lines.
View our animal origin-free products:
Large clear bottle labeled RocketCell Organoid Essential-Core Basal Medium with two smaller vials beside it on a white background.

Organoid
Media

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Large bottle of RocketCell iPSC Basal Medium, AOF (500 mL) with a smaller RocketCell iPSC Supplement vial beside it, both for stem cell culture.

iPSC
Growth Media

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Basal medium kit for cell culture (RocketCell NSC Basal Medium, AOF) with a large bottle and two small vials on the side

NSC Growth
Media

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Clear glass vial with white cap, labeled 'RocketCell S1 Supplement (50x), AOF' for research use only, sterile

B27-like, N2-like, N2B27-like Supplements

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Xeno-Free (XF)

  • The finished product and its manufacturing process do not use primary raw materials directly sourced from non-human animals or recombinant materials produced using DNA sequences derived from non-human animals.
  • Primary raw materials may instead come from human sources or include recombinant materials produced using plant, bacterial, yeast, or human cell expression systems. Animal-derived components may still be present in secondary or tertiary raw materials.
View our xeno-free products:
Two RocketCell hMSC Basal Medium XF bottles (500 mL and 15 mL) with white caps, for research use only, labeled with colorful bottom pattern.

hMSC Medium

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Two small glass vials labeled VitroGel EMT and RocketCell EMT supplement next to a clear 96-well microplate on a white background, ready for cell culture work.

GBM Kit

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Bottle labeled RocketCell EMT Supplement (50X), XF—5 mL, -20°C, for research use only.

EMT Supplement

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Angiogenesis Kits

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Discover how our end-to-end platform can support your cell culture research

Explore our updated resources for a concise overview of VitroGel®’s key features and application areas.

Comparison of VitroGel® vs. Animal-based ECM

Discover the 20+ advantages of VitroGel® over animal-based ECM with this comprehensive comparison on key features, operation, application, and storage conditions.

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What is VitroGel®  | Overview Video

Learn why VitroGel® is the leading animal-free hydrogel for 3D cell culture.

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End-to-end Platform for Organoid Culture

Learn about our solutions for consistent and robust organoid culture.

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