unleash, leash, deadlock,

unleash   /ʌnˈliːʃ/ DJ    /ʌn'liʃ/ KK

to suddenly let a strong force, emotion, etc. be felt or have an effect 發泄；突然釋放；使爆發 verb

leash   /liːʃ/ DJ    /liʃ/ KK

• noun
  • See also:
    lead Synonym
  • See also:
    strain at the leash
• verb
  • to control an animal, especially a dog, with a lead/leash 用皮帶繫住，拴住，縛住（尤指狗） VN

deadlock   /ˈdedlɒk/ DJ    /-lɑːk/ DJ US    /'dɛdˈlɑk/ KK US

• noun
• a complete failure to reach agreement or settle a dispute 僵持；僵局；相持不下 singular uncountable
• a type of lock on a door that needs a key to open or close it 需用鑰匙開關的門鎖 

Ref: Critical Reviews in Immunology. 30(4):340-386 (2010)p351

Unleashing the full capacity of TIDCs to stimulate naive T cells may therefore require breaking the suppressive deadlock created by the tumor environment.