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SQZ Biotechnologies

SQZ Biotechnologies Co was a clinical-stage cell therapy company spun out of MIT in 2013, known for its Cell Squeeze microfluidic platform and HPV cancer vaccines.

SR (Korean rail operator)

SR is a South Korean public corporation that ran SRT high-speed trains from Suseo Station in Seoul, launched in 2016 as Korea's second high-speed rail operator before merging with KORAIL in 2026.

SR 12 AB

SR 12 AB is a young K4+M2.5 T Tauri binary in the rho Ophiuchus cloud, about 125 pc away, hosting SR 12 AB c, a directly imaged 13-Jupiter-mass companion at roughly 1000 au with an ALMA-detected circumplanetary disk.

SR protein

SR proteins (SRSF1-12) are conserved serine/arginine-rich RNA-binding splicing factors with RRM and RS domains that regulate splice-site choice, mRNA export, translation, and NMD, and drive cancer when misregulated.

SR West Country and Battle of Britain classes

The SR West Country and Battle of Britain classes, known as the Bulleid light pacifics, were 110 British 4-6-2 steam locomotives built between 1945 and 1951.

SR-2 Veresk

The SR-2 Veresk (СР-2 «Вереск») is a Russian submachine gun developed by TsNIITochMash for the FSB and adopted in 2000 to pierce body armor with the 9×21mm cartridge.

SR-22 (insurance)

An SR-22, also called Form SR-22, is a certificate of financial responsibility an auto insurer files with a state agency to prove a driver carries minimum liability insurance.

SR-25

The SR-25, also known as the Stoner Rifle-25, is a semi-automatic 7.62mm NATO precision rifle designed by Eugene Stoner and made by Knight's Armament Company in the early 1990s.

SR-3 Vikhr (СР-3 Вихрь)

The SR-3 Vikhr is a Russian compact assault rifle firing the subsonic 9x39mm cartridge, adopted in 1996 by the FSB and Ministry of Internal Affairs.

SR1 RNA (Bacillus)

SR1 is a 205-nt dual-function small RNA of Bacillus subtilis: it base-pairs with ahrC mRNA to inhibit arginine catabolism gene translation and encodes the peptide SR1P, which stabilizes gapA mRNA via GapA.

Sr2RuO4

Sr2RuO4, or strontium ruthenate, is a layered perovskite metal that superconducts below about 1.5 K; discovered in 1994, it has for three decades served as the principal test case for theories of unconventional superconductivity.

Sr3Ir2O7

Sr3Ir2O7, known as strontium iridate, is a bilayered perovskite iridate studied as a candidate spin-orbit Mott insulator; it orders antiferromagnetically along the c axis at 285 K.

Sr3Ru2O7

Sr3Ru2O7 is a quasi-two-dimensional bilayer ruthenate metal, tuned through a quantum critical point by a c-axis magnetic field of about 7.9 tesla, with an electronically nematic high-field phase.

Sra Ghundai, Ghazni

Sra Ghundai, Ghazni: ruins of a walled ancient city 2 km north of Nawa, Afghanistan, south of Ab-i Istada; a fortified settlement occupied in the Sassanian-Turki Shahi (6th-9th c.) and Early Islamic (10th-12th c.) periods, distinct from a Pakistani mountain of the same name.

Sra Private Equity Portfolio

SRA Private Equity Portfolio, formally SRA Private Equity Portfolio V LP, is a Delaware pooled private equity fund managed by New York firm Summit Rock Advisors, with about $788 million sold.

Srabanti Chatterjee

Srabanti Chatterjee (শ্রাবন্তী চট্টোপাধ্যায়), born 1987 in Calcutta, is a Bengali film actress who debuted as a child artist in Mayar Bandhon (1997), led Champion (2003), contested the 2021 West Bengal election for the BJP from Behala Paschim, lost, quit the party, and later joined Trinamool Congress.

Sraffian economics

Sraffian economics is the school of thought built on Piero Sraffa's 1960 book Production of Commodities by Means of Commodities, which determines prices and the division of income between wages and profits.

Srah Srang

Srah Srang (ស្រះស្រង់), the "royal bath" of Angkor, Cambodia: a 700 by 300 m sacred reservoir begun in the 10th century under Rajendravarman II and remodeled by Jayavarman VII, with a sandstone landing terrace, central island temple, and famous sunrise views.

Sram (Croatian TV series)

Sram is the Croatian adaptation of the Norwegian teen series Skam, produced by CGM Films for HRT since October 2024. Its four seasons follow different Zagreb high schoolers (Eva, Nora, Lovro, Vanessa), released through real-time social media clips plus weekly HRT1 episodes, surpassing 300 million digital views.

Śramaṇa (श्रमण)

Śramaṇa (श्रमण), Pali samaṇa, is the Sanskrit word for an ascetic who left household life in ancient India, a category including Buddhists, Jains, and Ājīvikas.

SRAS

SRAS (spatially resolved acoustic spectroscopy) is a non-destructive laser ultrasonic technique that maps surface acoustic wave velocity to image grain structure and crystallographic orientation, developed at the University of Nottingham and patented in 2005.

Srav3R

Srav3R is a Japanese UK hardcore and bass music producer from Sapporo, Japan, active since 2013 and a member of the hardcore collective HARDCORE TANO*C.

SRCR domain

The SRCR (scavenger receptor cysteine-rich) domain is an ancient protein module of about 100 amino acids, defined by 6 to 8 cysteines, found in immune receptors.

SRD5A2

SRD5A2 (steroid 5 alpha-reductase 2, Gene ID 6716, 2p23.1) encodes the NADPH-dependent enzyme converting testosterone to DHT; mutations cause autosomal recessive 5α-reductase type 2 deficiency with 46,XY undervirilization, and finasteride inhibits the enzyme.

SRD5A3-CDG

SRD5A3-CDG (formerly CDG type Iq, OMIM 612379) is a rare autosomal recessive glycosylation disorder from SRD5A3 gene variants blocking polyprenol-to-dolichol conversion, causing early vision loss, intellectual disability, hypotonia, and ataxia.

Srđan Amidžić

Srđan Amidžić (born 1980) is a Bosnian politician of the Alliance of Independent Social Democrats serving as Minister of Finance and Treasury of Bosnia and Herzegovina.

Srđan Verstovšek

Srdan Verstovsek (Srđan Verstovšek) is a hematologist-oncologist, Chief Medical Officer of Kartos Therapeutics since 2023, formerly of MD Anderson, known for leading the COMFORT-I and MOMENTUM trials of the first myelofibrosis drugs.

SREBF1

SREBF1 (SREBP1) is a human gene at 17p11.2 encoding SREBP-1, a bHLH-Zip membrane-bound transcription factor regulating fatty acid and sterol synthesis; isoforms SREBP-1a and SREBP-1c are released by sterol-regulated proteolysis and linked to diabetes and cancer.

SREBF2

SREBF2 (SREBP-2, bHLHd2), human gene at 22q13.2, encodes a bHLH-Zip transcription factor regulating cholesterol synthesis and uptake genes via SCAP/INSIG sterol sensing, with intronic miR-33a; central to statin action and linked to SREBF2-related developmental disease.

Srebrenica

Srebrenica, a town in eastern Bosnia's Republika Srpska on the Drina river, was a medieval silver-mining center and is now known for the July 1995 genocide of over 8,000 Bosniak men and boys and the Potočari memorial.