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Updated: Aug 16, 2026

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T and B Cell Receptor Immune Repertoire Analysis using Next-generation Sequencing
Published on: January 12, 2021
Decoding Immune Cell Doublets in Humans: From Artifacts to Insights
Ningxin Kang1, Cheryl Kim2, Bjoern Peters1,3
1Center for Vaccine Innovation, La Jolla Institute for Immunology, La Jolla, California, USA.
Summary
Immune cell doublets, previously dismissed as artifacts, are now recognized as biologically significant interactions. This review highlights their role in immune communication and discusses methods for their study.
Area of Science:
- Immunology
- Cell Biology
- Bioinformatics
Background:
- Immune cell doublets are frequently observed in human samples but often disregarded as technical artifacts.
- Emerging evidence suggests these doublets represent biologically meaningful immune cell interactions.
Purpose of the Study:
- To review the evidence for biological immune cell doublets in human tissues.
- To explore their phenotypes, functions, and implications for understanding immune communication.
- To discuss analytical challenges and emerging technologies for doublet research.
Main Methods:
- Review of existing literature and single-cell datasets.
- Analysis of phenotypic and functional characteristics of immune cell doublets.
- Evaluation of current and novel technologies for doublet identification and analysis.
Main Results:
- Biological immune cell doublets exist across various human tissues and exhibit distinct characteristics.
- Distinguishing biological doublets from technical artifacts remains a significant challenge due to the lack of definitive markers.
- Novel technologies like high-throughput image-enabled sorting are advancing doublet research.
Conclusions:
- Immune cell doublets are not merely artifacts but crucial indicators of immune cell interactions.
- Further research is needed to validate their biological significance and develop robust identification methods.
- Advancements in technology are paving the way for deeper insights into immune cell communication through doublet analysis.

