Improve the bracketed part of the sentence. Scientists (have developed) an “organ-on-a-chip” platform to study how drugs are transported across the human placental barrier.
In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option. Virat Kohli added another feather _____ his cap by his wonderful performance in the one day match.