Third-person singular simple present indicative form of co-op

plural of co-op

(biology) The requirement of T cells for two signals in order to become fully activated.

plural of co-worker

Third-person singular simple present indicative form of co-exist

present participle of co-exist

simple past tense and past participle of co-exist

present participle of co-operate

simple past tense and past participle of cooperate

Third-person singular simple present indicative form of co-operate