| direct service costs | Costs which are directly identifiable with a particular service. (12 Dec 1998) |
|---|---|
| direct technique | In dentistry, an inlay technique in which the wax pattern is made directly in the prepared cavity in the tooth. Synonym: direct technique. (05 Mar 2000) |
| direct terminal repeat | A particular sequence of nucleotides which appears on both ends of a DNA or RNA molecule. (09 Oct 1997) |
| direct transfusion | Transfusion of blood from the donor to the receptor, either through a tube connecting their blood or by suturing the vessels together. Synonym: immediate transfusion. (05 Mar 2000) |
| direct vision | Vision stimulated by an object imaged on the fovea centralis. Synonym: direct vision. (05 Mar 2000) |
| direct vision spectroscope | <instrument> A spectroscope consisting of a single tube containing a series of prisms; one end of the tube is placed in as close contact as possible with the substance to be examined while the observer places his eye at the opposite end; it can be used to make a spectroscopic examination of the blood in vivo, as in the ear lobe or web of the thumb. (05 Mar 2000) |
| direct zoonosis | A zoonosis transmitted between animal and humans from an infected to a susceptible host by contact, by airborne droplets or droplet nuclei, or by some vehicle of transmission; the agent requires a single vertebrate host for completion of its life cycle and does not develop or show significant change during transmission; may include anthropozoonoses (rabies), zooanthroponoses (amoebiasis), and amphixenoses (certain streptococcoses). (05 Mar 2000) |
| fluorescent antibody technique, direct | A form of fluorescent antibody technique utilizing a fluorochrome conjugated to an antibody, which is added directly to a tissue or cell suspension for the detection of a specific antigen. (12 Dec 1998) |
| anastomotic veins | See: inferior anastomotic vein, superior anastomotic vein. (05 Mar 2000) |
| anonymous veins | An obsolete term for brachiocephalic veins. (05 Mar 2000) |
| anterior cardiac veins | Two or three small veins in the anterior wall of the right ventricle opening directly into the right atrium independently of the coronary sinus. Synonym: venae cordis anteriores. (05 Mar 2000) |
| anterior cardinal veins | See: cardinal veins. (05 Mar 2000) |
| anterior intercostal veins | Tributaries to the musculophrenic or internal thoracic veins from the anterior portions of intercostal spaces. Synonym: venae intercostales anteriores. (05 Mar 2000) |
| anterior labial veins | Tributaries of the femoral or external pudendal veins draining the mons pubis and anterior labia majora. Synonym: venae labiales anteriores. (05 Mar 2000) |
| anterior scrotal veins | Tributaries of the femoral or exteranl pudendal veins drainign the anterior aspect of the scrotum and the skin and dartos fascia of the shaft and base of the penis. Synonym: venae scrotales anteriores. (05 Mar 2000) |