In 1970, the number of HMOs declined to fewer than 40. Paul M. Ellwood, Jr., often called the father of the HMO, began having discussions with what is today the U.S. Department of Health and Human Services that led to the enactment of the Health Maintenance Organization Act of 1973.
How is Nutrient Broth (microbiology) abbreviated? NB stands for Nutrient Broth (microbiology). NB is defined as Nutrient Broth (microbiology) very rarely.
An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as bacteria and viruses. The antibody recognizes a unique molecule of the harmful agent, called an antigen, via the Fab's variable region.