Examples of sentinel

• If parasites can be considered as promising sentinels, we need reasons for the establishment of ' new ' indicators.

• Of 185 sentinels recovered, 2n7 % had single-species infections.

• Using the adjoint problem, one shows that the existence of these sentinels is reduced to the solution of exact controllability problem with constraints on the state.

• They are certainly sentinels of the environment in which we live because dogs generally share that environment, sometimes very closely indeed.

• They stand as sentinels scrutinising concentrations of public and private power.

• They seem to me to deserve the highest praise of all as the silent sentinels who make an audience possible.

• No clinical signs or seroconversion were observed in the uninoculated sentinel rabbit kept in the same room as the inoculated rabbits.

• One of the tower's sentinels died in the lightning strike.