Aquariums with natural or prefited substrate may be used to obtain natural photographs.

Observationally therefore, virtual materials can be said not to exist without a natural physical substrate.

The diggers had lowered the ground at the pylon's base by a distance of three meters, laying bare the natural substrate.

The natural substrate of IgA proteases is immunoglobulin A, hence its name.

The enzyme assay may be invalid because of differences between the natural substrate and an artificial substrate used in testing.

In reality we are ignorant about the natural substrates for most AQPs.

These protease inhibitors bind to an enzyme's active site and block interaction with natural substrates.

The natural substrate of the enzyme is the organic compound methenyltetrahydromethanopterin.

It has been shown to fold the mitochondrial protein rhodanese; however, no natural substrates have yet been identified.

Myrosinase and its natural substrate, glucosinolate, are known to be part of the plant's defense response.