Dictionary

trichinellosis See trichinosis.

trichinosis A disease that is due to eating raw or undercooked pork or wild game that is infected with Trichinella spiralis larvae. Initial symptoms are abdominal discomfort, nausea, diarrhea, vomiting, fatigue, and fever. Next usually come headaches, fevers, chills, cough, eye swelling, aching joints, muscle pains, itchy skin, diarrhea, and constipation. With heavy infection, patients…

transcription Making an RNA copy from a sequence of DNA (a gene). Transcription is the first step in gene expression.

transfer RNA See RNA, transfer.

transferred ophthalmia See sympathetic ophthalmia.

transfusion The transfer of blood or blood products from one person (the donor) into the bloodstream of another person (the recipient). In most situations, transfusion is done as a lifesaving maneuver to replace blood cells or blood products lost through severe bleeding. Transfusion of one’s own blood (autologous transfusion) is the safest method, but it…

transfusion medicine The practice of blood transfusion and blood conservation, complementary activities that ensure the best balance between safety and convenience during emergency care or surgery.

transient ischemic attack An event that affects the central nervous system and has the signs and symptoms of a stroke but that goes away within a short period of time. Abbreviated TIA. A TIA is due to a temporary lack of adequate blood and oxygen (ischemia) to the brain. This is often caused by the…

transition, menopause See menopause transition.

transitional cell carcinoma See carcinoma, transitional cell.

translation The process by which the genetic code carried by messenger RNA (mRNA) directs the production of proteins from amino acids.

translocation A structural chromosome rearrangement in which chromosome material is transferred from one chromosome to another. Translocation is the result of chromosome breakage.