A Coombs test (also known as Coombs' test, antiglobulin test or AGT) is either of two clinical blood tests used in immunohematology and immunology.
Hudson Bay (Inuktitut: Kangiqsualuk ilua, French: baie d'Hudson) (sometimes called Hudson's Bay, usually historically) is a large body of saltwater in northeastern Canada with a surface area of 1,230,000 square kilometres (470,000 sq mi).
Named for the Dutch explorer Henry Hudson who explored these waters in 1610, it is the second-largest bay on the planet, next to the Bay of Bengal. Shallow, with an average depth near 100 m (333 ft), the bay is approximately 1,370 km (850 mi) long and 1,050 km (650 mi) wide.