SC : Modifier

Question

The patient's rare disease was treated using novel techniques developed at the medical school.

Can someone please explain what is wrong in the sentence and why ?

Will it be the corrected form ?
- The patient's rare disease was treated, using novel techniques developed at the medical school.

Source : Manhatten SC Book

GMATbuster92 · Answer

if i am not wrong there is no noun for modifier --> using novel techniques.
ing modifier can modify only nouns.

I don't think this is correct way : " The patient's rare disease was treated, using novel techniques developed at the medical school."

you need to have a noun that use those techniques , as patient itself cannot use it . so either removed the modifier or add something else.

souvonik2k · Answer

Hi
We need to have the subject that is using novel techniques. In the above sentences, the subject is missing.
It can be corrected by introducing a subject, for e.g.
The doctor treated the patient's rare disease using novel techniques developed at the medical school.
Hope it is clear.

ArupRS · Answer

I have one doubt. Don't we need to use a comma separator? 
The doctor treated the patient's rare disease, using novel techniques developed at the medical school. OR 
The doctor using novel techniques developed at the medical school treated the patient's rare disease.

Please explain.

SC : Modifier

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