| Placido da Costa, Antonio | <person> Portuguese ophthalmologist, 1848-1916. See: Placido da Costa's disk. (05 Mar 2000) |
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| Placido da Costa's disk | <instrument> An instrument marked with lines or circles by means of which the corneal reflex can be observed. Synonym: Placido da Costa's disk. Origin: kerato-+ G. Skopeo, to examine (05 Mar 2000) |
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| costa | <microbiology> Rod shaped intracellular organelle lying below the undulating membrane of Trichomonas. Generates active bending associated with local loss of birefringence at the bending zone, probably as a result of conformational change in the longitudinal lamellae. Major protein approximately 90 kD. (10 Nov 1998) |
| costa cervicalis | A rib which arises from the seventh cervical vertebrae (above the normal first rib). Occurs in only about 0.5% of people. May cause nerve and artery problems. (12 Dec 1998) |
| Beguez Cesar, Antonio | <person> Cuban paediatrician. See: Beguez Cesar disease. (05 Mar 2000) |
| Pacchioni, Antonio | <person> Italian anatomist, 1665-1726. See: pacchionian bodies, pacchionian corpuscles, pacchionian depressions, pacchionian glands, pacchionian granulations. (05 Mar 2000) |
| Valsalva, Antonio | <person> Italian anatomist, 1666-1723. See: aneurysm of sinus of Valsalva, Valsalva's antrum, Valsalva's ligaments, Valsalva manoeuvre, Valsalva's muscle, Valsalva's sinus, teniae of Valsalva, Valsalva test. (05 Mar 2000) |
| Riga, Antonio | <person> Italian physician, 1832-1919. See: Riga-Fede disease. (05 Mar 2000) |
| Scarpa, Antonio | <person> Italian anatomist, orthopedist, and ophthalmologist, 1747-1832. See: canals of Scarpa, Scarpa's fascia, Scarpa's fluid, Scarpa's foramina, fossa scarpae major, Scarpa's ganglion, Scarpa's habenula, Scarpa's hiatus, Scarpa's liquor, Scarpa's membrane, Scarpa's method, Scarpa's sheath, Scarpa's staphyloma, Scarpa's triangle. (05 Mar 2000) |
| Tapia, Antonio | <person> Spanish otolaryngologist, 1875-1950. See: Tapia's syndrome. (05 Mar 2000) |
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