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.
In science, every living thing including microorganisms like bacteria is known by specific names exactly like us. There are specific rules to name a bacteria; these rules are maintained by International Committee on Systematic Bacteriology and controlled by International code of Nomenclature of Bacteria. As soon as new/unknown bacterium is discovered, it is given a scientific name; similarly we name our new born baby!