--- title: "Stem Cells By Tissue Source: A Clear 2026 Comparison" description: "Adipose, bone marrow, and cord derived stem cells are not interchangeable. Here is what separates them in 2026 and why the difference matters." url: "https://savemyfat.com/stem-cells-tissue-source-comparison/" --- # Adipose, Bone Marrow, and Cord: Why the Tissue Source Matters #### Table of Contents - [Oscar Tellez](https://savemyfat.com/author/oscartellez/) - September 17, 2026 - 10:00 am ![Lab instrument and monitor showing magnified cells beside glowing sample tubes, where stem cells are characterized](https://savemyfat.com/wp-content/uploads/2026/08/stem-cells-tissue-source-comparison.png)Adipose, bone marrow, and cord: why the tissue source matters 2 Fat, bone marrow, and umbilical cord are not three doors into the same room. The stem cells and stromal cells drawn from each carry different markers and fall under different federal analyses. That difference decides what is approved, what is only studied, and what an advertisement may say. **TLDR Source tissue is not a detail. The only FDA-approved mesenchymal stromal cell product is bone marrow derived, and the approved cord blood products are blood forming, not mesenchymal. No adipose-derived product is FDA approved for any disease. Adipose tissue banking preserves a patient’s own tissue and does not guarantee eligibility, access, or clinical benefit from any future therapy, trial, or program.** **Important Disclaimer:** Save My Fat does not provide FDA-approved treatments or cures for any disease. Banking adipose tissue today does not guarantee eligibility, access, or clinical benefit from any future therapy, clinical trial, or medical program. All content is for educational purposes only and does not constitute medical advice. Patients must consult their own licensed healthcare professionals regarding all medical decisions. --- One label covers all three sources, as if the source did not matter. It does. A cell from fat is not a cell from marrow, and the approval record settles that. ## What the only approved mesenchymal product proves Approvals attach to a source, not a category. The only FDA-approved mesenchymal stromal cell product is RYONCIL (remestemcel-L-rknd). FDA’s [approval announcement](https://www.fda.gov/news-events/press-announcements/fda-approves-first-mesenchymal-stromal-cell-therapy-treat-steroid-refractory-acute-graft-versus-host) is dated December 2024, and the approval covers steroid-refractory acute graft-versus-host disease in pediatric patients 2 months and older. Its [package insert](https://www.fda.gov/media/184603/download) says the cells are “isolated from the bone marrow of healthy human adult donors.” Cord blood points elsewhere. FDA’s [consumer alert](https://www.fda.gov/vaccines-blood-biologics/consumers-biologics/consumer-alert-regenerative-medicine-products-including-stem-cells-and-exosomes) describes the approved stem cell products as “blood-forming stem cells … derived from umbilical cord blood,” approved for disorders of blood production only. FDA’s roster of [approved cellular therapy products](https://www.fda.gov/vaccines-blood-biologics/cellular-gene-therapy-products/approved-cellular-and-gene-therapy-products) lists no adipose-derived product for any disease. --- ## How adipose stem cells differ from marrow cells By markers and proportion. The [IFATS and ISCT statement](https://pmc.ncbi.nlm.nih.gov/articles/PMC3979435/) on adipose cells proposes CD36 (GPIIIb) and CD106 (VCAM-1) to tell the two apart, because “ASCs, in contrast to MSCs, do not express CD106 but are positive for CD36.” ASC means adipose-derived stromal and stem cells. ISCT’s [nomenclature position](https://pubmed.ncbi.nlm.nih.gov/31526643/) asks that the acronym MSC be “supplemented by tissue-source origin of the cells.” Proportion is the other half. The stromal vascular fraction, or SVF, is what remains after adipose tissue is processed, and [Table II](https://pmc.ncbi.nlm.nih.gov/articles/PMC3979435/) of that statement reports its makeup. Cell population Share (percent) Stem and progenitor cells Under 0.1 Granulocytes 10 to 15 Monocytes 5 to 15 Lymphocytes 10 to 15 Endothelial cells 10 to 20 Pericytes 3 to 5 Stromal cells 15 to 30 Stem and progenitor cells sit under 0.1 percent of that fraction. The authors also note that “the information in this table represents recommended guidelines only and is not to be construed as industry standards or regulatory definitions at this time.” --- ## Why the source decides what an advertisement can say Because the federal criteria are built around the tissue and its processing, and advertising is named inside them. Under [21 CFR 1271.10](https://www.ecfr.gov/current/title-21/section-1271.10), a product stays in the lighter regulatory tier only if it meets four criteria, one turning on “the labeling, advertising, or other indications of the manufacturer’s objective intent.” FDA’s [current guidance](https://www.fda.gov/regulatory-information/search-fda-guidance-documents/regulatory-considerations-human-cells-tissues-and-cellular-and-tissue-based-products-minimal) classifies adipose as a structural tissue, so isolating SVF is “generally considered more than minimally manipulated,” and using adipose tissue for a degenerative, inflammatory, or demyelinating disorder “would generally be considered a non-homologous use.” That analysis was written for fat. --- ## What Save My Fat does, and what it does not promise It connects patients and providers with a United States tissue bank. [Save My Fat](https://savemyfat.com/) does not collect, process, store, or treat tissue, and it is not a clinic, not a bank, and not a medical practice. A licensed physician performs any collection. The promise is narrow on purpose. Banking preserves a patient’s own adipose tissue for potential future use and guarantees no eligibility, access, or clinical benefit later. Anything derived from it, including SVF, is investigational, early in study, and not on [FDA’s approved list](https://www.fda.gov/vaccines-blood-biologics/cellular-gene-therapy-products/approved-cellular-and-gene-therapy-products) for any disease. Start with a licensed provider. --- ## Frequently Asked Questions ### Are adipose stem cells the same as bone marrow stem cells? No. They come from different tissue, and published markers separate them. ISCT [clarified in 2005](https://pubmed.ncbi.nlm.nih.gov/16236628/) that such cells “do not seem to meet generally accepted criteria for stem cell activity,” which makes the popular name “potentially misleading to the lay public.” ### Is adipose tissue banking a treatment? No. It is preservation and storage of a patient’s own tissue, and our [adipose tissue banking](https://savemyfat.com/what-is-adipose-tissue-banking-a-complete-guide/) guide covers the process. Any future use depends on FDA regulatory status, physician guidance, and the pathways available then. --- ## Key Takeaways Source is not a footnote. The one approved mesenchymal stromal cell product comes from bone marrow, and the approved cord blood products are blood forming rather than mesenchymal. Nothing derived from adipose tissue is FDA approved for any disease. Inside processed fat, stem and progenitor cells sit under 0.1 percent. Banking preserves a patient’s own tissue and guarantees no eligibility, access, or benefit later. Ask your own licensed provider. Save My Fat operates as a tissue preservation service, not a medical practice or treatment provider. Stem cell and regenerative medicine regulations vary by state, including specific informed-consent and disclosure requirements in Florida, Utah, and Nevada governing tissue and stem cell services. Banking adipose tissue does not connect patients to any treatment pathway, and any future use depends on FDA regulatory status, physician guidance, and the availability of approved or investigational pathways at that time. Readers weighing adipose tissue banking for potential future use can review [current pricing](https://savemyfat.com/pricing/) or start a conversation through the [contact page](https://savemyfat.com/contact-us/). --- *Save My Fat partners with L2 Bio for laboratory processing and storage.* *This article is for educational purposes only and does not constitute medical or legal advice. Legal and medical review including neurology and neurosurgery input is required before publication. Please consult your neurologist or neurosurgeon before making any decisions about adipose tissue banking or research participation.* **About the author:** Oscar Tellez is the founder and CEO of Save My Fat. He holds a Bachelor of Science in Exercise Science and Health Promotion from Florida Atlantic University. He has spent more than a decade in the regenerative medicine industry across product distribution, laboratory and vendor relationships, and provider training. He is not a licensed clinician, and this article is educational, not medical advice. **Related guide:** [the stem cell science glossary](https://savemyfat.com/stem-cell-science-glossary/). Follow Save My Fat on Google Set us as a preferred source and Google will show our latest updates more often in your results. [PrevPreviousAdipose-Derived Stem Cell Market Size and Growth Trends for Patients](https://savemyfat.com/adipose-stem-cell-market-size-2026/) [NextHow Stem Cell Bank Qualification Works: Eligibility ExplainedNext](https://savemyfat.com/adipose-banking-eligibility-qualification/) Exosomes ### [Exosome Banking: How It Differs From Whole-Cell Adipose Banking](https://savemyfat.com/exosome-banking-vs-adipose-banking/) [Read More »](https://savemyfat.com/exosome-banking-vs-adipose-banking/) Oscar Tellez 09/19/2026 10:00 AM Adipose Banking ### [How Stem Cell Bank Qualification Works: Eligibility Explained](https://savemyfat.com/adipose-banking-eligibility-qualification/) [Read More »](https://savemyfat.com/adipose-banking-eligibility-qualification/) Oscar Tellez 09/18/2026 10:00 AM [![Lab instrument and monitor showing magnified cells beside glowing sample tubes, where stem cells are characterized](https://savemyfat.com/wp-content/uploads/2026/08/stem-cells-tissue-source-comparison-768x768.png)](https://savemyfat.com/stem-cells-tissue-source-comparison/) Stem Cells ### [Adipose, Bone Marrow, and Cord: Why the Tissue Source Matters](https://savemyfat.com/stem-cells-tissue-source-comparison/) [Read More »](https://savemyfat.com/stem-cells-tissue-source-comparison/) Oscar Tellez 09/17/2026 10:00 AM Adipose ### [Adipose-Derived Stem Cell Market Size and Growth Trends for Patients](https://savemyfat.com/adipose-stem-cell-market-size-2026/) [Read More »](https://savemyfat.com/adipose-stem-cell-market-size-2026/) Oscar Tellez 09/16/2026 10:00 AM Regulation ### [Are Stem Cells Legal in the US? Answering the Most Common Question](https://savemyfat.com/are-stem-cells-legal-in-the-us/) [Read More »](https://savemyfat.com/are-stem-cells-legal-in-the-us/) Oscar Tellez 09/15/2026 10:00 AM Regulation ### [Is Stem Cell Therapy Legal in the US? A State-by-State Answer](https://savemyfat.com/is-stem-cell-therapy-legal-us/) [Read More »](https://savemyfat.com/is-stem-cell-therapy-legal-us/) Oscar Tellez 09/14/2026 10:00 AM ```json [{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/savemyfat.com\/stem-cells-tissue-source-comparison\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":"1","item":{"@id":"https:\/\/savemyfat.com","name":"Home"}},{"@type":"ListItem","position":"2","item":{"@id":"https:\/\/savemyfat.com\/our-blog\/","name":"Our Blog"}},{"@type":"ListItem","position":"3","item":{"@id":"https:\/\/savemyfat.com\/category\/stem-cells\/","name":"Stem Cells"}},{"@type":"ListItem","position":"4","item":{"@id":"https:\/\/savemyfat.com\/stem-cells-tissue-source-comparison\/","name":"Adipose, Bone Marrow, and Cord: Why the Tissue Source Matters"}}]}]},{"@context":"https:\/\/schema.org","@graph":[{"@type":"Person","@id":"https:\/\/savemyfat.com\/oscar-tellez\/#person","name":"Oscar Tellez","jobTitle":"Founder","description":"Oscar Tellez is the Founder of SaveMyFat, a company that connects patients and physicians with a U.S. tissue bank for adipose tissue banking, so a person's own tissue can be preserved for potential future use in FDA-regulated pathways. 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