2022 - 04 - 12

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 Rarest of Blood Groups. Ael, found in 30-year-old, in India - 

https://timesofindia.indiatimes.com/city/ahmedabad/rarest-of-blood-groups-ael-found-in-30-year-old/articleshow/90694947.cm

For Blood Grouping System, Refer 

https://nios.ac.in/media/documents/dmlt/hbbt/Lesson-07.pdf

https://nios.ac.in/media/documents/dmlt/hbbt/Lesson-12.pdf

https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1751-2824.2008.00188.x

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3353629/

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