Sentence examples for been require from inspiring English sources

HBV-X protein(HBx), a small regulatory protein of HBV that has been require for contributing to the onset and progression of HBV-related HCC [ 1- 3].

Stronger medicine is required.

Parental permission is required.

No software is required.

Honesty is required here.

Brute force was required.

Caution is required.

Advanced registration is required.

Jackets are required.

Tougher action is required.

"Evidence is required".