What is the difference between Hatching Blastocyst and Hatching Expanded Blastocyst?

Question

Anybody experience this? Which one is better? 
Thanks in advance.

Answer

From what I understand expanded means it is a further step in development then just blastocyst.  A hatching expanded blastocyst is a pretty awesome thing to have:). What grade are your embryos?  I remember you telling me but I forgot:)

What is the difference between Hatching Blastocyst and Hatching Expanded Blastocyst?

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