25 April 2019 (Thursday) - Weak D

The D antigen can be expressed in varying strengths. Usually it is plainly “positive” (like in most people) or “negative” (like me!) but occasionally it can be expressed weakly. Back in the day this was described as “Du”… but not any more.
Clicking here gives a nice little synopsis of the matter, and tyhere’s a link to a video and a podcast there too.

Weak D is pretty obscure – I found two today…

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