A cell membrane protein channel that selectively admits or excludes chemicals from the cytoplasm. In some bacteria efflux pumps prevent...

Intermittent subjective sensations of light that accompany the heartbeat.  

Pulp that, due to disease, is exposed to the air and saliva in the mouth.  

Cells forming a stellate reticulum lying between outer and inner layers of the enamel organ of a tooth.  

The study of mental acts by tests and experiments.  

The treatment of patients suffering psychological crises, including those who are suicidal or homicidal, perpetrators or victims of child abuse,...

A rare but persistent psoriasis that occurs on the back, thighs, and hips in thick scaling plaques.  

A bony bump or elevation in the midline of the lower part of the back of the skull in the...

Any prosthesis in which a small electric motor has been incorporated for the purpose of providing force to control various...

A prosthesis that expands the lateral segment of the maxilla; used in clefts of the soft and hard palates and...