But perhaps our example of the heart that both pumps blood and is employed in a rugbylike game can still be of help.

Reflowing solder is a common form of rework in the manufacture of printed circuit boards: you heat up the solder and it flows where it should have flowed the first time.

More recently it has been proposed that the APUD cell types of the gastrointestinal and respiratory tracts originate from neuroendocrine-programmed ectoblast.

This conceptual change allowed the Indian as tractable heathen to be rather rapidly replaced by the Indian as uncivilizable savage.