Being Used?

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You might hear about immunoglobulin being used in some people with other immune (autoimmune) problems.
Immunoglobulin therapy
I am really sorry to ask again about "being" but is "being used" a present progressive passive in "being used in some people.."?
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You might hear about immunoglobulin being used in some people with other immune (autoimmune) problems.


Not quite: "being used ... " is indeed a passive verb phrase. But it has progressive aspectuality, rather than being in the progressive aspect. The latter requires an auxiliary form of "be", as in immunoglobulin is being used in some people ..."

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Thanks. What is its grammatical role here?

It's grammatical role is 'predicator', i.e. a verb serving as head of the clause: immunoglobulin being used in some people with other immune (autoimmune) problems.

Thanks a lot, Billj! how do I determine or understand that the immunoglobulin is uncountable or countable?
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Related topics: Medicine, Biologyhae‧mo‧glo‧bin British English, hemoglobin American English /ˌhiːməˈɡləʊbɪn $ ˈɡloʊ/ noun [uncountable] a red substance in the blood that contains iron and carries oxygen
Is "immunoglobulin" uncountable in my example as "hemoglobin" defined as above?
Is "immunoglobulin" fall into substance category of the mass or uncountable noun?
We can't say 1,2,3 water but as you explained immunoglobulin are of 5 types so obviously it can be countable. I am confused.

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