The Continental Shelf. The Continental Shelf is the gently sloping undersea plain between a continent and the deep ocean. The continental shelf is an extension of the continent's landmass under the ocean. Much of the continental shelf was exposed dry land during glacial periods.During interglacial periods, like today, the shelf is submerged under relatively shallow waters.he continental shelf is an extension of the continent's landmass under the ocean. Much of the continental shelf was exposed dry land during glacial periods. During interglacial periods, like today, the shelf is submerged under relatively shallow waters.
Indirect ELISA, conventional but efficient. Indirect ELISA is a two-step ELISA which involves two binding process of primary antibody and labeled secondary antibody. The primary antibody is incubated with the antigen followed by the incubation with the secondary antibody.However, this may lead to nonspecific signals because of cross-reaction that the secondary antibody may bring about. 1. Micro-well plates are incubated with antigens, washed up and blocked with BSA. 2.he primary antibody is incubated with the antigen followed by the incubation with the secondary antibody. However, this may lead to nonspecific signals because of cross-reaction that the secondary antibody may bring about. 1. Micro-well plates are incubated with antigens, washed up and blocked with BSA. 2.
The hepatitis B surface antibody (anti-HBs) is the antibody that is produced in response to hepatitis B surface antigen (HbsAg), a protein present on the surface of the hepatitis B virus.Anti-HBs appears after convalescence from acute infection and lasts for many years.he hepatitis B surface antibody (anti-HBs) is the antibody that is produced in response to hepatitis B surface antigen (HbsAg), a protein present on the surface of the hepatitis B virus.