They thought that by blocking these receptors with druglike chemicals they might shut down the signals for tumor growth.

FORBES: Targeting Tumors

Bed-blocking is often thought to occur due to a lack of care home places for the elderly.

BBC: Gloucestershire hospitals failing over 'bed-blocking'

These are compounds of oxygen, sulphur, selenium and tellurium that are thought to be particularly suitable for thermoelectric applications because their structure allows electric currents to flow while blocking thermal currents.

ECONOMIST: Thermoelectrics

Tottenham failed to make the most of their superiority and, if they thought it was too easy, they were given a fright when Jaroslav Cerny forced keeper Paul Robinson into a blocking save to keep out a fierce shot.

BBC: Tottenham 1-1 Slavia Prague