B positive patients can receive blood from B positive, B negative, O positive and O negative donors.
According to the chart answer must be a
Many introduced species damage the ecosystem, bring new diseases, prey/kill native species and compete with native plants and animals for food and shelter (which can result in a decrease of the species)
The hepatitis B and the human papillomavirus (HPV) vaccines are made this way. The vaccine is composed of a protein that resides on the surface of the virus. This strategy can be used when an immune response to one part of the virus (or bacteria) is responsible for protection against disease.Jun 28, 2016