Research in cell-engendered immunity until recently is concerned not only with the development of new and better vaccines alone, but also with the problem of transplanting tissues and organs from one organism to another, for although circulating antibodies play a part in the rejection of transplanted tissues, cell-engendered reactions play the primary role

A. Research in cell-engendered immunity until recently is concerned not only with the development of new and better vaccines alone , but also with the problem of transplanting tissues and organs from one organism to another, for although circulating antibodies play a part in the rejection of transplanted tissues, cell-engendered reactions play the primary role

B. Research in cell- engendered immunity until not long ago is concerned with not only the development of new and better vaccines alone, but also with the problem of transplanting tissues and organs from one organism to another, for although circulating antibodies play a part in the rejection of transplanted tissues, cell-engendered reactions play the primary role

C Research in cell- engendered immunity has been concerned until recently not only with the development of new and better vaccines, but also with the problem of transplanting tissues and organs from one organism to another, for although circulating antibodies play a part in the rejection of transplanted tissues, cell-engendered reactions play the primary role

D Recent research in cell- engendered immunity is not only concerned with the development of new and better vaccines, but also with the problem of transplanting tissues and organs from one organism to another, for in the rejection of transplanted tissues, although circulating antibodies play a part, cell-involving reactions play the primary role

E Recent research in cell-engendered immunity has been concerned not with the development of new and better vaccines, but with the problem of transplanting tissues and organs from one organism to another, for although circulating antibodies play a part in the rejection of transplanted tissues, cell-involving reactions play the primary role,
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Alicia Helle, an online student at the UW, "Obtaining my degree online has been a blessing. With two small children, I am able to work when it is convenient for my family and me. I have nothing but positive comments and experiences from my time at UW-Stout.”

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Chris,

Excellent analysis and professional approach. This is in fact an RC sentence and the original is much longer than this. I edited it. However, my point of this passage was to make people ignore the size of it but concentrate on the basic tenets of grammar. This passage is no big deal when you handle it that away. Am I right?

One additional point that I wish to make regarding. Choice E is that it may not change the meaning by omitting the 'until recently’, which I thought I covered it up with “recent research”. However, what changes the meaning more IMO is by saying “not with the development of new and better vaccines, but with the problem”. Here we are missing the accentuation that the original idiom “not only….. but also intends to impart, in addition to giving a diametrically opposite twist to the issue by eliminating the first arm totally.

I am sad that no test- taker is trying to solve such specious monsters. .

Kudos to you Chris
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” I truly believe in online learning, I have been a student in both an Ivy League school (brick and mortar) and in an online setting and I have learned 1,000 times more in an online setting. You do not have anyone there lecturing you and then you do the work, online you are made to do it all yourself. Amazing how different the results are. - Heather(a student)”

Alicia Helle, an online student at the UW, "Obtaining my degree online has been a blessing. With two small children, I am able to work when it is convenient for my family and me. I have nothing but positive comments and experiences from my time at UW-Stout.”

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Hi Daagh,

Very interesting - the question was straight from an RC!

For (E), yes the more salient point is that in eliminating the 'not only...but also' construction, (E) creates an entirely different meaning.

Hmm, I wonder how many SC questions are lifted from RC passages .
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Christopher Lele
Magoosh Test Prep

I was dwelling between (A) 60% & (C) 40%.
Good question asked and nice explanation for the answer.
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" Make more efforts "
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Tough one but tense is key here. The Present perfect accurately captures the time essence of the problem hence "has been" is the correct tense.

Straight C.
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+1 Kudos me - I'm half Irish, half Prussian.