What Are the Most Rare Blood Types?

You probably know there are some blood types that are very common, such as type O. But do you know what the most rare blood types are? Find out.

Blood Types: What They Are and Mean for Your Health

Blood types: the not so bleeding obvious - Curious

What are the most and least rare blood types? - Quora

What are the 3 rarest blood types?

Weekender] What blood types are really about

Blood types

What is the rarest blood type?

Why Type O Is the Most Common Blood Type

What is the rarest blood type? - Quora

Rare blood types - NHS Blood Donation