72,234 articles
Sichen Shao
Sichen (Susan) Shao is a molecular and cell biologist, an HHMI Investigator since 2024, and an associate professor at Harvard Medical School known for work on ribosome-associated quality control.
Sicista
Sicista (birch mice) is the sole living genus of the rodent family Sicistidae (Sminthidae), a Palearctic dipodoid with 13–17 species in five lineages, radiating 6.0–4.7 Mya.
Sick building syndrome
Sick building syndrome (SBS), now called non-specific building-related symptoms, is nonspecific occupant symptoms (headache, fatigue, mucosal irritation) tied to time in a building with no identifiable cause; WHO described it in 1982 and 1984.
Sick-euthyroid syndrome
Sick-euthyroid syndrome, or non-thyroidal illness syndrome (NTIS), low T3 syndrome: abnormal thyroid function tests (low T3, high rT3, variable TSH) in severe non-thyroidal illness; reversible, not treated with thyroid hormone.
Sickle cell disease
Sickle cell disease (SCD), also called sickle cell anemia, is a group of inherited hemoglobin disorders causing sickle-shaped red cells, pain crises, and stroke; treated with hydroxyurea, transfusions, and CRISPR gene therapies Casgevy and Lyfgenia.
Sickle cell disease with crisis
Sickle cell disease with crisis, ICD-11 code 3A51.2, covers sickle cell disease during a vaso-occlusive pain crisis: blocked blood flow causing severe pain, triggered by illness, dehydration, or altitude, treated with rapid analgesia.
Sickle cell disease without crisis
Sickle cell disease without crisis (ICD-10-CM D57.1; ICD-11 3A51.1) is the classification code for the chronic, stable state of sickle cell disease with no acute crisis; crisis codes D57.0x apply once a crisis occurs.
Sickle cell trait
Sickle cell trait (SCT, HbAS) is the carrier state of one sickle hemoglobin gene and one normal gene; usually symptomless, transmissible to children, rare risks under extreme exertion, dehydration, or low oxygen.
Sickle cell-beta-thalassemia disease
Sickle cell-beta-thalassemia disease (HbS/β-thalassemia), also called sickle beta-thalassemia, is an inherited sickle cell disease from one HbS gene plus one beta-thalassemia gene; the β0 form resembles HbSS sickle cell anemia, the β+ form is milder.
Sickness Impact Profile
The Sickness Impact Profile (SIP) is a self-administered questionnaire measuring how sickness changes everyday behavior, with 136 yes/no items in 12 categories, scored 0% to 100% dysfunction.
Sid Gilman
Sid Gilman (Sidney Gilman, born 1932) is an American neurologist who chaired the University of Michigan's neurology department from 1977 to 2004 and pioneered PET imaging of brain disorders.
Sida
Sida (fanpetals) is a pantropical genus of herbs and shrubs in Malvaceae, tribe Malveae, with about 200-277 species, type species Sida rhombifolia; weedy, medicinal, and polyphyletic per recent phylogenetics.
Siddha medicine (சித்த மருத்துவம்)
Siddha medicine (சித்த மருத்துவம்), also called Tamil medicine, is one of India's oldest traditional medical systems, practiced mainly in Tamil-speaking South India and regulated under the Ministry of Ayush.
Siddharth Balachandran
Siddharth Balachandran is a virologist and cancer researcher who directs the Center for Immunology at Fox Chase Cancer Center in Philadelphia and studies inflammatory cell death in virus infections.
Siddhartha Roy
Siddhartha Roy, born 1954, is an Indian biophysicist and structural biologist known for work on gene regulation and protein structure, who won the Shanti Swarup Bhatnagar Prize in 1999 and directed CSIR-IICB in Kolkata.
Siddharthan Chandran
Siddharthan Chandran is a Scottish regenerative neurologist, MacDonald Professor of Neurology at the University of Edinburgh, and Director and CEO of the UK Dementia Research Institute since 2023.
Siddhayoga sangraha
Siddhayoga Sangraha (सिद्धयोगसंग्रह) is a compiled Ayurvedic formulary by Vaidya Yadavji Trikamji Acharya, first published 1978 by Baidyanath, gathering 256 formulations proven in fifty years of practice.
Siddu (bread)
Siddu (सिद्दू), also called Khobli in Shimla, is a Himachali steamed fermented wheat bread stuffed with poppy seed, walnut, or black gram paste, served with ghee, dal, or chutney; a winter staple of Shimla and Kullu, possibly from Tibetan tse-doe.
Side effect
Side effect: unintended effect of a medication beyond its therapeutic action; regulatory terms are adverse event (no causality needed) and adverse drug reaction (suspected causality), classified into types A through F and monitored via pharmacovigilance systems like FAERS, MedWatch, and WHO VigiBase.
Side Effects (2013 film)
Side Effects is a 2013 American psychological thriller directed by Steven Soderbergh, in which a depressed woman's antidepressant treatment leads to a killing, starring Rooney Mara, Jude Law, Channing Tatum, and Catherine Zeta-Jones.
Side stitch
Side stitch, or exercise-related transient abdominal pain (ETAP), is sharp, well-localized abdominal pain during exercise, most common in running and horse riding, worsened by pre-exercise eating, decreasing with age, and attributed mainly to parietal peritoneum irritation.
Siderastrea siderea
Siderastrea siderea, the massive starlet coral, is a common western Atlantic reef coral with corallites over 3 mm across, an 822 Mb genome, high bleaching tolerance, and a critically endangered listing.
Sideritis
Sideritis (ironwort, Greek mountain tea, τσάι του βουνού) is a Lamiaceae genus of 148 species from Europe to China; four species hold an EU traditional herbal monograph for cough, cold, and mild gastrointestinal complaints.
Sideroblastic anemia
Sideroblastic anemia is a group of inherited and acquired anemias defined by ring sideroblasts, iron-loaded erythroblasts in the marrow, with causes ranging from ALAS2 mutations to myelodysplastic syndrome.
Siderophore
Siderophore: small (<1500 Da) iron-chelating molecules secreted by bacteria and fungi under iron limitation; also called sideromycins when antibiotic-conjugated. Fur-regulated NRPS or NIS biosynthesis; basis of cefiderocol Trojan horse antibiotics and plant growth promotion.
Siderosis
Siderosis, or welder's lung, is a benign, nonfibrotic pneumoconiosis caused by inhaling iron oxide from welding fume or iron and hematite mine dust; x-ray shadows mimic silicosis but lung function is usually preserved.
Sidewinding
Sidewinding is a mode of snake locomotion in which the animal moves sideways across loose sand or mud, best known in desert vipers like the sidewinder rattlesnake.
Sidi Chen
Sidi Chen is a geneticist and Associate Professor at Yale School of Medicine known for genome-wide CRISPR screens in living animals that uncover cancer immunotherapy targets.
Sidney Altman
Sidney Altman was a Canadian American molecular biologist at Yale who shared the 1989 Nobel Prize in Chemistry for discovering that RNA can act as a catalyst.
Sidney C. Smith
Sidney C. Smith is an American cardiologist at UNC Chapel Hill known for writing the ACC/AHA cardiovascular guidelines and a past president of the American Heart Association.