preparative

The catch-22 is that while stem cell transplants can prevent this failure, the usual preparative chemotherapy or radiation can cause severe complications or even cancer.

These preparative mass spectrometers can be used to produce chemical compounds in a new way.

In the context of her research, an “artifact” is a particular result of the preparative or investigative part of a scientific procedure — i.e., an unnatural one.

Because the required alkylidyne catalysts have also been greatly improved in terms of activity, functional group tolerance, and user-friendliness, this method constitutes a valuable preparative complement.

A laugh, if no argument, is a splendid preparative.