Converse of object

• call: This belongs to a class of medicine called the glycine antagonists.

• use: Yet the advice to use double dose histamine antagonists seems to be almost universal.

Preposition: at

• receptor: The berries contained atropine, an antagonist at acetylcholine receptors which dilated their pupils.

Adjective modifier

• 5-ht3: Over the first 4-5 days 5-HT3 receptor antagonists alone or in combination with dexamethasone were superior to conventional anti-emetic regimens.

• 5-ht7: The development of 5-HT7 receptor antagonists is still in its infancy, however this is expected to soon change.

• 5ht3: The standard treatments, the 5HT3 antagonists, whilst effective, do not block all serotonin receptor sub-types.

• h2: H2 receptor antagonists also reduce the amount of acid produced by your stomach.

• interleukin-1: Treatment of rheumatoid arthritis with recombinant human interleukin-1 receptor antagonist.

• opioid: Naltrexone is an opioid antagonist that blocks the effect of opioids in the brain.

Modifies a noun

• ligand: Antagonist ligands can disable the signaling of an agonist ligand.

• muscle: A method to control antagonist muscle moment was implemented.

• drug: By blocking this effect with these antagonist drugs the constriction is reversed.

Noun used with modifier

• leukotriene: A very few people who have taken asthma treatment tablets called ' leukotriene receptor antagonists ' have turned out to have Churg-Strauss syndrome.

• receptor: H2 receptor antagonists also reduce the amount of acid produced by your stomach.

• histamine: Histamine antagonists were not found to reduce the rate of gastric ulcers with either short term or long term trials.

• -receptor: H 2 -receptor antagonists have not been shown to be effective against ulceration induced by aspirin in aspirin-intolerant patients.

• iib/iiia: A number of potent glycoprotein IIb/IIIa antagonists have been developed for therapeutic use.

• gnrh: A GnRH antagonist blocks the body's ability to produce testosterone.

Preposition: of

• receptor: Antagonists of the NK1 receptor have been shown to have anti-depressant activity in man.

Preposition: for

• treatment: Pfizer also launched a growth hormone receptor antagonist for the treatment of the abnormal growth condition acromegaly where conventional treatments have failed.