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  1. What to Know About Chimerism - WebMD

    Sep 24, 2024 · To explore chimerism in humans, we must first understand how it can happen in the first place. What is Chimerism? Chimerism in humans can occur when a mom is pregnant …

  2. Chimerism: Definition, Symptoms, Testing, Diagnosis, and More

    Nov 29, 2018 · Chimerism is a rare condition in which a person’s body contains two different sets of DNA. While some high-profile cases have made headlines, typically, this condition has no …

  3. Chimera (genetics) - Wikipedia

    A genetic chimerism or chimera (/ kaɪˈmɪərə, kɪ -/ ky-MEER-ə, kih-) is a single organism composed of cells of different genotypes. Animal chimeras can be produced by the fusion of …

  4. Chimerism Symptoms: Signs You May Have Two Sets of DNA

    Aug 3, 2025 · Chimerism is a rare biological phenomenon where an individual possesses cells originating from two or more distinct zygotes. This fascinating condition challenges the typical …

  5. What is a chimera? Chimerism, explained | BabyCenter

    A chimera is the term for someone who has more than one set of DNA. Here's how this very rare condition happens, and why chimerism is often associated with…

  6. What Are Human Chimeras? | Ask A Biologist

    How is this possible? It turns out that Fairchild had a very rare condition called chimerism. Chimerism is when an organism inherits two sets of DNA instead of one. This happens in …

  7. Understanding Human Chimerism: Genetic Phenomenon Explained

    Dec 21, 2024 · Explore the science of human chimerism, its types, detection methods, and implications in medicine and law. Learn how this genetic phenomenon challenges traditional …

  8. Definition of chimerism - NCI Dictionary of Cancer Terms

    A condition in which some cells or tissues in a person’s body contain at least two different sets of DNA. Chimerism can occur in different ways. One way it can occur is through an organ or …

  9. Monitoring chimerism after transplant is critical to good health

    Apr 21, 2023 · One of the ways doctors determine whether a bone marrow transplant (BMT) is working is by examining the chimerism, or percentage of donor versus recipient immune …

  10. Chimera | Genetics, Symptoms, & Microchimeras | Britannica

    Oct 31, 2025 · The most widely known examples of twin chimerism are blood chimeras. These individuals are produced when blood anastomoses (connections) form between the placentas …