Koro may refer to:

Geography
Koro Island, a Fijian island
Koro Sea, in the Pacific Ocean
Koro, Ivory Coast
Koro, Mali
Koro, Wisconsin, United States, an unincorporated community

Languages
Koro language (India), an endangered language spoken in Arunachal Pradesh, India
Koro language (New Guinea)
Koro language (Vanuatu)
Koro, a variety of the Maninka language spoken in Ivory Coast

Polynesian culture
Oro, a god in Polynesian mythology
Koro (literally, "grandfather"), a term of respect in the Māori language for a male Kaumātua (tribal elder)

Other uses
Kōrō, a masculine Japanese given name
KORO, a Spanish-language television station in Corpus Christi, Texas, USA
Koro (incense burner), a Japanese incense burner
Koro (medicine), the syndrome in which someone believes their external genitals are retracting
Koro Wachi language, spoken in Nigeria
Musiliu Obanikoro, popularly known as Koro
Nkoroo language, Nigeria
These dimers and monomers are not known to participate in coagulation, whereas the tetramers do.A units have a mass of about 83 kDa, 731 amino acid residues, 5 protein domains (listed from the N-terminal to C-terminal, residue numbers are in brackets):
activation peptide (1–37)
β-sandwich (38–184)
catalytic domain (185–515), in which the residues C314, H373, D396 and W279 partake in catalysis
β-barrel 1 (516–628)
β-barrel 2 (629–731)B units are glycoproteins. Each has a mass of about 80 kDa (8.5% of the mass is from carbohydrates), 641 residues and 10 sushi domains. Each domain has about 60 residues and 2 internal disulfide bonds. Physiology
A subunits of human factor XIII are made primarily by platelets and other cells of bone marrow origin. B subunits are secreted into blood by hepatocytes. A and B units combine within blood to form heterotetramers of two A units and two B units. Blood plasma concentration of the heterotetramers is 14–48 mg/L and half-life is 9–14 days.A clot that has not been stabilized by FXIIIa is soluble in 5 mol/L urea, while a stabilized clot is resistant to this phenomenon. Factor XIII deficiency
Deficiency of Factor XIII (FXIIID), while generally rare, does occur, with Iran having the highest global incidence of the disorder with 473 cases. The city of Khash, located in Sistan and Balochistan provinces, has the highest incidence in Iran, with a high rate of consanguineous marriage. Diagnostic use
Factor XIII levels are not measured routinely, but may be considered in patients with an unexplained bleeding tendency.