1.

In a first of its kind study, / a team of scientist have tried to / 'grow' new stem cells in / the ear that get damage with age.

A. In a first of its kind study,
B. a team of scientist have tried to
C. 'grow' new stem cells in
D. the ear that get damage with age
E. No error
Answer» C. 'grow' new stem cells in


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