zoological classification sometimes inserted below subclass and above subterclass (rarely used) and superorder. (https://en.wiktionary.org/wiki/infraclass)
The African Union (AU) is a continental body consisting of 55 member states from the African Continent. It was officially launched in 2002 as a successor to the Organisation of African Unity (OAU, 1963-1999). (Adapted from African Union, 2021 https://au.int/en/overview)
This action occurs when the combined effect of two or more chemicals is equal to the sum of the effect of each agents given alone (they do not interact in a direct way), for example: 2 + 2 = 4. (https://www.ccohs.ca/oshanswers/chemicals/synergism.html)
The cellular and architectural (eg, stromal, epithelial) features of a tissue. (Clinical and Laboratory Standards Institute. 2025. Harmonized Terminology Database https://htd.clsi.org/listallterms.asp)
Note
As used in immunohistochemistry, it is the cell-type localization of the antibody-antigen reaction.
Specialized forms of antibody-producing B-lymphocytes. They synthesize and secrete immunoglobulin. They are found only in lymphoid organs and at sites of immune responses and normally do not circulate in the blood or lymph. (http://www.nlm.nih.gov/cgi/mesh/2012/MB_cgi?mode=&index=10496&field=all&HM=&II=&PA=&form=&input=)
Constructed wetlands are engineered systems designed to mimic natural wetland processes, using vegetation, soils, and microbial assemblages to treat wastewater, manage stormwater runoff, create wildlife habitats, and provide other ecosystem services. These systems can be surface flow (free water surface) or subsurface flow, and are used for primary, secondary, or tertiary treatment of various types of wastewater. (FAO. 2026. Science, Technology and Innovation (STI) Portal. Constructed wetlands https://sti-portal.fao.org/taxonomy/term/1208 citing UNEP/UN-Habitat, with supporting information from EPA and European Commission)
Titanium dioxide (TiO2) is a white crystalline powder used as a colour in various food categories. Food-grade TiO2 is produced from titanium-containing minerals by either the sulfate or chloride processes. (FAO & WHO. 2024. Compendium of food additive specifications – Joint FAO/WHO Expert Committee on Food Additives (JECFA), 97th Meeting, Rome, 31 October – 9 November 2023. Joint FAO/WHO Expert Committee on Food Additives (JECFA) Monographs, No. 32. Rome. https://doi.org/10.4060/cc9815en)
“Material transfer agreement” means a special type of contract defining the rights and obligations of all parties, including third parties, during the transfer of biological material from a provider to a recipient. (WIPO, 2009. The National Policy on Traditional Knowledge, Genetic Resources and Traditional Cultural Expressions, 2009 https://www.wipo.int/wipolex/en/text/496265)
Note
Material Transfer Agreements without the term "standard" refer to agreements that are negotiated and drafted on a case-by-case basis between the parties involved in the transfer of biological materials.
Mother-to-child transmission, that is, transmission directly from the mother to an embryo, fetus, or baby during pregnancy or childbirth. (https://en.wikipedia.org/wiki/Vertically_transmitted_infection)
