| RSC | rat spleen cell; rested state contraction; reversible sickle-cell; right subclavian |
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| S/b | sickle cell beta-thalassemia |
| SC | conditioned stimulus; sacrococcygeal; Sanitary Corps; scalenus [muscle]; scapula; Schwann cell; scia... |
| S-C | sickle cell |
| SCA | self-care agency; severe congenital anomaly; sickle-cell anemia; single-camera autostereoscopic [ima... |
| sickle cell retinopathy | A condition marked by dilation and tortuosity of retinal veins, and by microaneurysms and retinal haemorrhages; advanced stages may show neovascularization, vitreous haemorrhage, or retinal detachment. (05 Mar 2000) |
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| sickle cell test | <investigation> A test which looks at red blood cells under the microscope to detect sickle cells after an agent which lowers the oxygen content of the sample is added. A positive test is result is determined by the presence of sickle cells. Abnormal results indicate sickle cell anaemia or sickle cell trait. (27 Sep 1997) |
| sickle cell-thalassaemia disease | Anaemia, clinically resembling sickle cell anaemia, in which individuals are compound heterozygous for the sickle cell gene and a thalassaemia gene; about 60 to 80% of haemoglobin is Hb S, up to 20% Hb F, and the remainder Hb anaemia. Synonym: sickle cell-thalassaemia disease. (05 Mar 2000) |
| sickle cell trait | <haematology> This condition occurs in people who have one of two possible genes (i.e., they are heterozygous forthe allele) that code for the defective haemoglobin responsible for sickle cell anaemia. The coditionis diagnosed by exposing an individual's red blood cells to a low oxygen environment, if the trait is present, the cells will turn to a sickle shape. People with this trait may suffer milder symptoms of sickle cell anaemia, or may have no symptoms. Some scientists believe the trait actually provides an evolutionary advantage in tropical environments because the slightly altered shape of the blood cells causes a person to be more resistant to malaria. (09 Oct 1997) |
| sickle flap | A sickle-shaped flap from the anterior scalp and one side of the forehead, based on the opposite temporal artery. (05 Mar 2000) |
| sickle form | The male or female gametocyte(s) of Plasmodium falciparum, whose presence in human red blood cells is diagnostic of falciparum malaria. Synonym: crescent, sickle form. Myopic crescent, a white or grayish white crescentic area in the fundus of the eye located on the temporal side of the optic disk; caused by atrophy of the choroid, permitting the sclera to become visible. Synonym: myopic conus. Sublingual crescent, the crescent-shaped area on the floor of the mouth formed by the lingual wall of the mandible and the adjacent part of the floor of the mouth. (05 Mar 2000) |
| sickle scotoma | A comet-shaped scotoma, occurring in glaucoma, attached at the temporal end to the blind spot or separated from it by a narrow gap; the defect widens as it extends above and nasally curves around the fixation spot, and then extends downward to end exactly at the nasal horizontal meridian. Synonym: Bjerrum's sign, sickle scotoma. (05 Mar 2000) |