PBT2 is an 8-hydroxy quinoline that removes copper and zinc from cerebrospinal fluid, which are held to be necessary catalysts for amyloid beta aggregation.

Perhaps we can act as the catalyst necessary to end it.

This could be the necessary catalyst to establish a full U17 County programme.

This time Todd brought coffee and the smell was the necessary catalyst.

The answer in part is that regional deals often accomplish what GATT doesn't, and in part because they are a necessary catalyst to global agreement.

The openness of education is drawing immediate attention as it will act as a necessary catalyst for social development and as an agent of change.

Local business leaders realized that a deep water port was a necessary catalyst to the local economy.

In this and similar instances the resulting public reaction of outrage to cruelty and compassion for those who suffered was the final but necessary catalyst to reform.

She did not win a single primary, but in 2002, she said her campaign had been a necessary "catalyst for change."

The single market might be the necessary catalyst to initiate a real European economic and financial recovery from the crisis and rebuild much needed confidence among the citizens.