Cyanobacteria have three possible pathways through which they can metabolise 2-phosphoglycolate.

Each protein can follow many possible folding pathways to assume its final shape and function.

From this intermediate there are two possible pathways for the cycle to continue on.

This means that there are at least four possible pathways of gene replication.

Out of 82 possible metabolic pathways 56 were represented (Table 4).

All possible pathways are therefore defined by the design of the software.

Three possible pathways lay before Jake, and he could not see more than a couple of meters down any of them.

Rather than explore all the possible pathways we need some method of ordering the search.

Another possible pathway for nuclear fusion would produce helium-4 and a gamma ray.

And the current sky show is only one possible pathway through the 3-D map.