1.   A gene has the particular effect that it does only because there is an existing structure upon which to work.

2.   In addition, continuing maintenance and repair of all kinds of existing structures will also contribute to demand for these professionals.

3.   It should be remembered that the canal engineers had very few existing structures from which to obtain ideas.

4.   Left and right both tend to accept the existing political structure and differ only on the substance of policy and political personnel.

5.   Nu advanced the ingenious suggestion that instead of the existing Commonwealth structure there should be a federation of Socialist states.

6.   Reform would need to be deep rooted, but existing structures could be modified.

7.   The new accommodation is on one floor, set round a pretty courtyard which echoes the traditional details of the existing structure.

8.   The obvious impact of these principles has been to graft the legal aid scheme on to the existing structure of private practice.

9.   To achieve profound change, women must necessarily work within the existing structure.